This food web describes feeding relationships in a tropical community.
boa constrictor
beetle
7
coati
7
poison dart frog
sloth
strangler fig
~ fungus
• fruit bat
If an invasive species of beetle enters this community, which change is most
likely to happen?
O A. An increase in the stability of the overall ecosystem
O B. A decline in the native species of beetle
O C. An increase in biodiversity throughout the community
© D. A decline in competition for strangler figs as a food source
Answers
This food web (attached image) describes feeding relationships in a tropical community.
If an invasive species of beetle enters this community, which change is most likely to happen?
A. An increase in the stability of the overall ecosystem
B. A decline in the native species of beetle
C. An increase in biodiversity throughout the community
D. A decline in competition for strangler figs as a food sourc
Invasive species compete for resources with native species affecting the stability of trophic webs. The correct option is B) A decline in the native species of beetle.
What is a trophic web?
The trophic web is a relationship process between different organisms, through which occurs transference of energy. The ones placed at lower levels pass energy to the ones at the higher levels.
As it is a web, all organisms are equilibrated until a change occurs. When the change affects any of the involved links, there can be a cascade effect on the web.
A change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
Also, when two or more species are competing for the same source of food, a change in any of the population sizes will affect the other ones.
What are the effects of invasive species?
The introduction of invasive species has ecological, economic, and socio-cultural consequences.
Once an invasive species has been established, it overgrows.
In the new areas, these species have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, and better nitches-. These factors favor their establishment because they are adapted to surviving under harder conditions.
They interact with native species by competing for resources such -as water, place, radiation, exposure, shelter, food, etcetera-.
They can also become significant predators of native species, consuming a wide diversity of prey items, and in many cases, there are no native species that may prey on them.
They provoke significant damage to the structure of native ecosystems, causing severe damage to endemic species. They produce ecological imbalances in the trophic chains and the dynamics of communities. Invasive species are uncontrollable.
As they expand, they can also affect human in an economic manner and has socio-cultural effects.
In the exposed trophic web,
native beetle feed on strangler fig. coati, bat, and fungi also get energy from strangler fig.coati, poison frogs, and fungi feed on beetles.When an invasive species enters and stablishes in a stable community, it alters the whole dynamic.
One of the pricipal characteristics of invasive species is that they compete with native species for resources. One of these resources is food.
Invasive beetles will compete with native beetles for strangler fig. Due to the characteristics of invasive species as strong competitors, native beetles population will decline. Coati and fruit bat will also be affected by the introduction of this new invasive species, because they will also compete for food. Bats only feed on figs, so its population will also decline. Coati will also be affected, but probably less because it might feed on invasive beetles.The whole community structure will be affected after the introduction of this new species.
Options,
A. An increase in the stability of the overall ecosystem
No, the stability of the ecosystem will decrease
B. A decline in the native species of beetle
Yes, native species compete for food and other resources with the invasive beetle species. As invasive species are good competitors, native beetle will be affected and its population will decline.
C. An increase in biodiversity throughout the community
No, because the introduction of invasive species causes a reduction in biodiversity.
D. A decline in competition for strangler figs as a food source
No, because many species feed on figs, including the invasive species, which will affect all the other ones.
The correct option is B. A decline in the native species of beetle.
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Related Questions
The skeletons of mammalian forelimbs represent variations of a structure that was present in their common ancestor. What has most likely caused the variation in forelimbs?
Question 5 options:
Development of vestigial structures
Trait formation due to behaviors
Changes in the genetic codes
Answers
Trait formation due to behaviours, Thus, option "D" is correct.
What has most likely caused the variation in forelimbs?It is obvious to see that the three animals, cat, whale, and bat, have the same basic structure of their forelimbs, but also that they have developed differently and have taken a new shape. The reason for this is a trait formation due to behaviour.
The cat's ancestors were terrestrial, and the cats have remained terrestrial, walking on their four legs, and having the same shape and function as their ancestors.
The whales had similar forelimbs, but their ancestors started to move more and more in water. As they did, they needed more muscle power, but also greater width of the forelimb so that they can move more easily and more efficiently in the water.
This behaviour has gradually resulted in a flat, strong, peddle-like forelimb. The bat too had similar forelimbs to that of the cat, but its ancestors started to try to fly.
The process was gradual, and it started with jumping, then longer jumps, development of skin between the fingers, and elongation of the fingers, thus providing more area for the development of wider skin area. This has resulted in developing a light, wide, skin-dominated forelimb with elongated fingers, providing flight for the bat.
Thus, option "D" is correct.
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A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of her report?
A.“Question” states what she is asking, and “Hypothesis” states the result of her experiment.
B. “Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.
C. “Question” describes what she is trying to find out, and "Hypothesis" states the procedures and methods of data collection.
D. “Question” describes what she is trying to find out, and “Hypothesis” states any additional information or prior knowledge about the question.
Answers
“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format. The correct option is B.
Research questions and hypothesesResearch questions are phenomena being queried upon which a research is set up. The results from the research will answer the questions being asked.
Hypotheses, on the other hand, are tentative guesses made before conducting the experiment associated with the research. They are falsifiable statements of what the answers to the research questions will be. If the results support the statements, they are accepted, otherwise, they are further scrutinized scientifically.
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adapt extinct mutation
adaptations fittest natural selection
criticism fossil saber-tooth tiger
Darwin giant sloth survival
evolution glyptodont variation
a. The term describes living things that are best suited to their environment.
b. Species that survive are the ones that make or meet changes.
c. Florida has a rich record.
d. Two examples of land animal fossils found in Florida are the ________ and the ______.
e. Some animals unable to adapt to the changing environment became ___________.
f. Living things _______________ over time to meet their changing environment.
g. This biologist, __________________, studied evolution in the 1800s.
h. The ________________ was a giant, armadillo-like animal with a spiked tail that once lived in Florida.
i. The Origin of Species is a book written in 1859 about ___________________.
j. Nature selects the fittest for ______________________because they have useful traits.
k. Changes may occur in animals due to changes in the sequence of base pairs in their DNA, and this is known as a __________________.
l. Oldfield mice show ____________________ in the color of their fur.
m. The survival of the light-colored oldfield mice on Florida's Gulf Coast is an example of the process called ________________________.
n. Evolution is a controversial theory that has survived much _________________.
Answers
That organism will survive in the future which adapt themselves according to the environment.
What is fitness?
Fittest is the term describes living things that are best suited to their environment.
Species that survive are the ones that adapt, make or meet changes.
Florida has a rich fossil record spanning from the Eocene to recent times. Florida fossils are often very well preserved.
Two examples of land animal fossils found in Florida are the giant sloth and the saber-tooth tiger.
Some animals unable to adapt to the changing environment became extinct .
Living things mutate over time to meet their changing environment.
This biologist, Darwin, studied evolution in the 1800s.
The glyptodont was a giant, armadillo-like animal with a spiked tail that once lived in Florida.
The Origin of Species is a book written in 1859 about natural selection.
Nature selects the fittest for survival because they have useful traits.
Changes may occur in animals due to changes in the sequence of base pairs in their DNA, and this is known as a mutation.
Oldfield mice show variation in the color of their fur.
The survival of the light-colored old field mice on Florida's Gulf Coast is an example of the process called adaptation.
Evolution is a controversial theory that has survived much criticism.
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Describe how the normal force changes as the mass of the crate increases.
I need help asap
Answers
The the normal force increases as the mass of the crate increases.
What is normal force?Normal force is the force which acts downwards as a result of the weight of the body.
The weight of the body is a product of the mass of the body and the acceleration due to gravity.
Based on the graph, the normal force increases approximately 10-fold as the mass of body increases.
Therefore, the normal force increases as the mass of the crate increases.
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identify the food preservation method described.
question: A technique of placing the food undernloa temperature to maintain it's freshness.
Answers
Answer:
-Crygenic freezing
Explanation:
(Hope's it's Help)
Jason’s bathroom has two cotton bath mats in it, X and Y. Which bathmat will absorb water more quickly? Explain your answer to part a.
Answers
It's an ultra-absorbent bath mat soaks up an impressive amount of excess water quickly and efficiently, to keep your floor clean and slip-free.
Cotton bath mats are some of the most absorbent and comfortable models available. ...
Bamboo mats are durable and stylish.
Teak is a sensible alternative to bamboo.
Microfiber bath mats are reasonably priced and comfortable.
What is the difference between a bath rug and a bath mat?Bath mats are the absorbent, non-skid pads that you throw down in front of your shower or tub. They're specifically made for preventing slips and post-shower puddles. Bath rugs, on the other hand, are fluffier and lend more to the look of a luxurious and guest-friendly bathroom.
Thus, this could be the answer.
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How does the structure of a lymph node allow immune cells residing within the lymph node to perform their protective function?
Answers
Answer:
Each lymph node is well-supplied by both lymphatic vessels and blood vessels, which allow lymphocytes to enter and exit. The nodes are contained within a tough capsule, and surrounded by specialised fatty deposits, both of which may give some physical protection.
Explanation:
The term "pan-resistant" bacteria means:
a
Resistant to all antibiotics
b
Does not resist any antibiotics
c
Resistant to some antibiotics
d
Can only be treated by anti-viral drugs.
Answers
The correct solution is option a, resistant to all antibiotics.
Pandrug-resistant bacteria are defined by the bacterial strain, which is tolerant to all antimicrobial drugs currently available.Non-susceptibility to all drugs in all antimicrobial categories was termed Pan Drug Resistance(PDR). Resistance strategies are easily adopted by PDR microbes. Pan-drug-resistant Acinetobacter baumannii, pan-drug-resistant Klebsiella pneumonia, and pan-drug-resistant Pseudomonas aeruginosa are only a few examples.Because of their high vitality, colonization rate, and antibiotic resistance, these bacteria are frequently transmitted to patients.To learn more, refer:
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Place the following levels of organization within an organism in order from smallest to largest: organism, organ, molecule, organ system, population, cell, tissue, organelle, and atom
Answers
Which of the following is
generally true of multistage
rockets?
A. They cannot reach as high of a velocity as
conventional rockets.
B. They are easier to build than conventional
rockets.
C. They lose weight as they progress through
their stages.
D. They resupply themselves with fuel as they
travel.
Answers
Answer:
They are easier to build than conventional rockets.
9. A molecule that can accept and donate electrons is called
A. an electrochemical gradient
B. a cristae
C. a mitochondrial matrix
D. An electron carrier
Answers
Select all that apply
Chromosomes ___?
A. Are located in the nucleus
B. Occur in numbers that are the same for all organisms
C. Occur in numbers that are the same for all members of a certain species
D. Are organized into karyotypes for scientists to analyze
E. Are rod shaped structures that contain DNA
Answers
Answer:
A
Explanation:
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
Answer:
A
Explanation:
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
A fly has two alleles for the color of its eyes. The green allele is recessive, and
is represented by q. The blue allele is dominant, and is represented by p. If 44
of 100 organisms are green, what is p?
Homozygous dominant+ Heterozygous + Homozygous recessive = 1
↓↓↓
p²+ 2pq+q=1
A. 0.66
B. 0.56
C. 0.44
D. 0.34
Answers
Answer: D. 0.34
Explanation:
Hardy-Weinberg Principle
The Hardy-Weinberg Principle is a theory in biology that represents populations of organisms that don't experience any changes in genotypic frequency from generation to generation. These populations must meet the following conditions:
No genetic mutationsCompletely random matingNo gene flowNo selection (natural or artificial)An infinite population sizeIf a population meets these criteria, its genetic and allelic frequencies will remain constant and the population will be in Hardy-Weinberg Equilibrium. However, it is not possible for this to occur in nature, because at least one condition will always be violated in natural populations.
Hardy-Weinberg EquationsThere are two important equations to use when doing problems like this. The first is p + q = 1. It represents the allelic frequency of the population.
p = the frequency of the dominant alleleq = the frequency of the recessive allele
The second equation is p² + 2pq + q² = 1, which shows the predicted frequencies of the three possible genotypes.
44 of our 100 organisms are green, and we know that to be green, they must have a homozygous recessive genotype (gg). That means that the frequency of homozygous recessives (q²) = 44/100 or 0.44. Since we have q², we can just take the square root to find q.
[tex]\sqrt{q^2}[/tex]= [tex]\sqrt{0.44}[/tex]
q = 0.66
Now, we can plug q into our first equation, p + q = 1.
p + 0.663 = 1
p = 0.337, or about 0.34
To make sure these are right, we can plug them into the Hardy-Weinberg equation to check!
p² + 2pq + q² = 1
(0.34)² + 2(0.34)(0.66) + (0.66)² = 1
0.1156 + 0.4488 + 0.4356 = 1
1 = 1
10 points! Choose the right answer
Answers
Answer:
The right ans is option A ...It helps in the tranfer of minerals from the soil to plant
what important services do forest provide? how might their destruction have an effect on humans?
Answers
Answer:
forests provide us alot of things such as -
clean air, food to eat, fuel, shelter, fibers and more
they also help us by controlling floods and controlling soil erosion.
when we cut down trees we lose everything the forests give us and it would affect us in many ways
such as- more floods will come and soil erosion will happen , we will lack food, fresh air, fuel, fibres and more
Explanation:
Which term best describes this step of the investigative process?
Answers
The steps of investigative process include experiment, theory and observation.
What is investigative process?Investigative process is defined as the scientific process that is used to generate a conclusion about a particular finding.
The steps of investigative process include:
experiment, theory andobservation.Therefore, the steps of investigative process include experiment, theory and observation.
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How come the human body does not absorb water completely? In other words; why is it that even though the water could be the best possible in terms of purity, the kidneys still need to filter it? What is there to filter if the water is completely clean and pure? Shouldn't all that water simply be absorbed by all the cells in our organism?
Answers
Answer: this is a great question
Explanation:
Many countries around the world are spraying aerosols (condensation nuclei) into the atmosphere. What effect will this have, based on what we learned from the 1.06 lab? Question 20 options: More condensation nuclei - more cloud formation and precipitation More condensation nuclei - less cloud formation They shouldn't light a match when alcohol vapor is present in the atmosphere There is no effect. They are dong it for defense reasons.
Answers
More condensation nuclei, more cloud formation and precipitation are the results of spraying aerosols into the atmosphere.
What are the effects of aerosols on clouds?Aerosols greatly influence clouds formation and its growth. Water droplets gather readily around particles which provides a particle-rich atmosphere that promotes cloud formation.
So we can conclude that more condensation nuclei, more cloud formation and precipitation are the results of spraying aerosols into the atmosphere.
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Conditions within an ecosystem are constantly changing.
What options do organisms in the ecosystem have to deal with these changes?
Select all correct answers.
Organisms can adapt to the changes.
Organisms may change the ecosystem back to the way it was.
Organisms may die as a result of the changes.
Organisms can move to a new ecosystem.
Answers
Answer:
Organisms may die as a result of the changes.
Organisms can move to a new ecosystem.
Organisms can adapt to the changes.
Explanation:
I look the quiz. Have a good day! hope this helps!
Name two types of evidence scientists use to support the theory of evolution.
5:18 science unit test part 2
100 POINTS TO WHOEVER ANSWERS!!!
Answers
Which statement best describes renewable resources?
Answers
Answer: I do not know
Explanation:
There are no choices. Please complete your problem.
How can people preserve genetic variety in plants grown by grafting or splicing?
Answers
There are many reasons are specific to the plant and our needs but remember this, without us modifying plants we would have been extinct thousands of years ago, everything you eat today does not exist in nature and if it does exist is either inedible, toxic, or too small to provide important nutrition.
What is grafting?When the tissues of plants are joined together to let them continue their growth together as one, then such a practice is known as grafting.
Grafting is commonly practised in horticulture and agriculture for the growth of commercially important plants in an asexual manner.
In the process of grafting, the upper part of the combined plant is known as the scion and the lower part is known as the stock.
Thus, this could be the answer.
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Lymph is collected from the body’s organs.
Answers
Lymph is a fluid similar in composition to blood plasma. It is derived from blood plasma as fluids pass through capillary walls at the arterial end.
The lymphatic system collects excess fluid that drains from cells and tissue throughout the body and returns it to the bloodstream, which is then recirculated through the body.
Spleen: This largest lymphatic organ is located on your left side under your ribs and above your stomach.
An organism that has cells that lack a nucleus are called
Answers
Answer:
The answer is Prokaryotes
Answer: Prokaryotes
Explanation:
Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages.Classify the enzyme inhibitors by giving the names, mechanisms, and effect on the kinetic parameters Km and Vmax.
Answers
Enzyme inhibitors are either competitive, uncompetitive or non-competitive inhibitors and have different effects on Km and Vmax.
What are enzyme inhibitors?Enzyme inhibitors are substances which inhibit the catalytic activity of enzymes.
Enzyme inhibitors are classified into three:
Competitive inhibitors - compete with substrate for enzyme binding site. They have no effect on Vmax but increases Km.Uncompetitive inhibitors- bind to the enzyme–substrate complex. They decrease both Vmax and Km.Non-competitive inhibitors- bind to another site on the enzyme. They have no effect on Km but Vmax is decreased.Therefore, the enzyme inhibitors are either competitive, uncompetitive or non-competitive inhibitors and have different effects on Km and Vmax.
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Active
transport requires energy and moves substances
the concentration from
for
low to high concentration. Bulk transport carries susbstances which are too large
transport proteins. It is considered a type of active transport because it requires ATP
for very large
moves substances into the cell by vesicles and includes
substances.
moves substances out of the cell.
Answers
Answer:
Active transport mechanisms require the use of the cell’s energy, usually in the form of adenosine triphosphate (ATP).
Explanation:
If a substance must move into the cell against its concentration gradient, that is, if the concentration of the substance inside the cell must be greater than its concentration in the extracellular fluid, the cell must use energy to move the substance. Some active transport mechanisms move small-molecular weight material, such as ions, through the membrane.
In addition to moving small ions and molecules through the membrane, cells also need to remove and take in larger molecules and particles.
What processes can change sedimentary rock into igneous rock?
O A. Lithification and cooling
OC. Heating and cooling
OD. Uplift and erosion
B. High pressure and deposition
Answers
Answer:
heating
Explanation:
when it heat it come down
Heating and cooling
Explanation:
When sedimentary rocks are heated with tremendous heat and pressure, it will melt into magma. After some time it will cool and harden to form an igneous rock.
In an experiment, a snail was observed to have moved a distance of 0.5 meters in 2 hours. What rate of movement was observed in this experiment?
Answers
The rate of movement was observed in this experiment as 0.25 m/ hour.
How, explain your answer?A rate of movement is essentially a speed measurement, where you divide the distance crossed from point A to point B by the time it took to do it.
o, we know the snail moved a total distance of 0.5 meters. that's our distance crossed.
We know that took 2 hours. so we just have to calculate that:
0.5 meters / 2 hours = 0.25 m/hour
Thus, The rate of movement was observed in this experiment as 0.25 m/ hour.
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where carbon dioxide is
produced during respiration?
Answers
Answer:
It is produced in the mitochondrial matrix.
Explanation:
The mitochondria are the organelle(s) that take glucose as sugar, use it for energy, and release this into the other parts of the process of respiration.
When a substance accumulates within a living organism, it is known as ____.
A: Bioaccumulation
B: Venomous
C: Non-persistent
D: Corresive
Answers
Answer:
A: Bioaccumulation
Explanation:
It accumulates (builds up) in you, its bioaccumualtion.