What does the Serengeti ecosystem smell like?
Answer:
Everywhere you look, the world is truly wild, in a way that's just breathtaking. What does it smell like? You wouldn't think it would be noteworthy, but the whole Serengeti smelled clean. Fresh, kind of, with just a trace of dust on the wind.Explanation:
Which is an example of mechanical digestion that occurs in the human digestive system?
A. Saliva in the mouth acts to moisten and break apart food molecules.
B. The muscular lining of the esophagus pushes food from the mouth to the stomach.
C. The muscular walls of the stomach act to churn food back and forth.
D. Small molecules, such as glucose, are absorbed into the blood from the small intestine.
Answer:
Saliva in the mouth acts to moisten and break apart food molecules
An example of mechanical digestion that occurs in the human digestive system is saliva in the mouth acts to moisten and break apart food molecules.
What is mechanical digestion?Mechanical digestion entails physically breaking down food substances into smaller particles so that chemical digestion can proceed more quickly.
Chemical digestion involves digestive enzymes further degrading the molecular structure of ingested compounds into a form that can be absorbed into the bloodstream.
Thus, the correct option is A. Saliva in the mouth acts to moisten and break apart food molecules.
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Just like you and me, bacteria cells are under constant attack by
A. antiseptics
B. white blood cells
C. viruses
D. all the above
Answer:
C. Viruses
Explanation:
Which nucleic acid can carry the protein synthesis instructions from the nucleus to the ribosomes?
DNA
RNA
Monosaccharides
Endoplasmic reticulum
Answer:
Monosaccharides
Explanation:
Monosaccharides
In what type of countries do most nervous system disorders occur?
Answer:
Most nervous system disorders usually occur is Sub-Saharan Africa
Explanation:
Hope this helps!! :)
Determine which are true of prokaryotic and eukaryotic transcription. In prokaryotic cells _____________; in eukaryotic cells ______________.
Answer:
This question is not complete as it lacks options. However, it can be answered by giving the general differences between eukaryotic and prokaryotic transcription.
Explanation:
Eukaryotes are organisms that possess a membrane-bound nucleus that harbors their genetic material while prokaryotes are organisms that lack a membrane-bound nucleus.
Transcription is the process whereby a DNA template is used to produce an mRNA molecule. Below are the common differences in the transcription of eukaryotic and prokaryotic:
- Transcription in eukaryoric cell occurs in a NUCLEUS while transcription in prokaryotic cell takes place in a CYTOPLASM
- Transcription in eukaryotic cell requires proteins called TRANSCRIPTION FACTORS while transcription in prokaryotic cell does not require TRANSCRIPTION FACTORS.
- Transcription in eukaryotic cells occurs differently from translation while transcription in prokaryotic cells is coupled with translation i.e occur simultaneously.
A population of large predators in an ecosystem has been trapped and removed from the area. How would this event most likely change the food web in this ecosystem?
A.
The number of herbivores will decrease and the number of producers will increase.
B.
The number of herbivores will increase and the number of producers will decrease.
C.
The number of small predators will decrease and the number of herbivores will increase.
D.
The number of small predators will decrease and the number of omnivores will decrease.
Earth's early atmosphere was primarily composed of
hyrogen cyanide and carbon monoxide.
oxygen and carbon monoxide.
oxygen and water vapor.
carbon dioxide, water vapor and nitrogen.
Answer:
The correct answer is ''carbon dioxide, water vapor and nitrogen.''
Explanation:
About 4.5 billion years ago, Earth was a very geologically active planet. So many volcanic fumes formed the primitive atmosphere, which was mostly made up of water vapor, carbon dioxide, sulfur, and nitrogen. At this point, oxygen was barely present and the oceans did not yet exist. The primitive atmosphere is the one before the Precambrian, it was reductive, that is, it lacked free oxygen, and only had ammonia, methane and hydrogen, the high temperature of the atmosphere in its early stages facilitated the reaction of these gases to form organic compounds from which life may have emerged. UV rays passed, because ozone did not exist.
A 7th grade teacher asked students to engage in an argument regarding human impact on a national forest ecosystem that was home to mountain lions, coyotes,
and bobcats as well as about 3,000 deer. The deer ate grass, and the mountain lions, coyotes, and bobcats ate deer. Hunters began killing
large numbers of
mountain lions, coyotes, and bobcats. About 20 years later the deer population had increased to about 100,000. The teacher asked the students to explain why
the population of deer increased. Which student's argument most accurately explains the increase in the deer population?
O A. Student 1: The number of deer increased because deer populations are always increasing, even when there are lions, coyotes, and bobcats preying on
them.
O B. Student 2: The number of deer increased because without lions, coyotes, and bobcats, the deer lived longer and had more offspring that also lived
longer.
c. Student 3: The number of deer increased because with fewer mountain lions, coyotes, and bobcats, the deer had more food available to eat
D. Student 4: The deer population increased because with fewer lions, coyotes, and bobcats, there was less competition within the deer population.
Answer:Student 4
Explanation: Because if the mountain lions, coyotes, and bobcats decrease they arent enough to prey on the deer which causes the deer population to be able to reproduce over time.
How do laws reduce air pollution?
Answer:
Laws reduce air pollution by a number of things, this could be by issuing a fine of about £20 or above. This is the most common way yet im sure in more serious cases prison sentences are issued.
Which of these is not a characteristic of ALL living organisms?
A. Reproduces sexually
B. Is made of cells
C. Grow
D. Requires energy
(Hurry, l am taking my exam) In an effort to develop the best-tasting apple, a grower eliminated all trees that produced apples considered too sweet or too sour. What type of selection is being carried out by the grower? a. Directional b. Disruptive c. Choice d. Stabilizing
Answer: It is D. Stabalizing
Explanation:
I took the test and because the apples of both ends are being eliminated while the ones in the middle are being kept and increasing.
How have some rainforest plants adapted to receive enough sunlight? O by growing poisonous flowers O by growing giant, slippery leaves O by growing giant, bright flowers O by growing long, deep roots
Answer:
Well, one type of adaptation might be for a vine, lets say grows high into the canopy. It benefits from growing high up, so it can get more sun than growing below. Growing poisonous flowers are a protection from animals eating the fruits that the plants grow.
Explanation:
Genes influence an organism's traits by coding for ?
A:
Cells
B:
Proteins
C:
Chromosomes
D:
DNA
Genes influence an organism's traits by coding for proteins. Therefore, option B is correct.
What are genes?Genes are segments of DNA that hold the instructions needed to create a single, usually protein-producing, molecule in your body. These proteins regulate how our body develops and functions; they are also in charge of determining many of our physical traits, like our eye color, blood type, and height.
the information connected to a certain characteristic of the organism is encoded by these on the strands of genomic material; the entire strand of DNA or RNA is made up of numerous genes, each of which contains information. DNA is converted into RNA and then RNA is converted into protein.
Genes influence an organism's traits by coding for proteins. Therefore, option B is correct.
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(07.02 LC)
Which statement identifies the cause for thermal pollution in a lake?
A boater fueling his boat from the dock on the lake
A child feeding bread to fish near the shore
Flood irrigation methods utilized by farmers
People swimming in the lake near the shore
Answer:
A
Explanation:
Thermal pollution is a type of pollution that occurs as a result of changing the temperature of the lake
the fuelling process increases the temperature of the lake
Need these answers quick please tha ks
Certain individual females in a population of deer decide to stop breeding with males that don't have antlers. this is an example of which Form of speciation
A. Allopatric speciation
B. Sympatric speciation
C. Parasympathetic speciation
Certain individual females in a population of deer decide to stop breeding with males that don't have antlers. This is an example of which Form of speciation A. Allopatric speciation.
What's an allopatric speciation instance?
Allopatric speciation occurs when two companies of organisms are separated by using a bodily or geographic barrier. Not unusual examples of those boundaries include mountain degrees, oceans, or even big rivers. The isthmus of Panama is a high instance of a geographical barrier and it separates the Atlantic and Pacific oceans.
In allopatric speciation, groups from an ancestral populace evolve into separate species due to a period of geographical separation. In sympatric speciation, agencies from the same ancestral populace evolve into separate species with no geographical separation.
Allopatry, which means 'in another area', describes a population or species this is bodily remoted from different comparable companies by an extrinsic barrier to dispersal. From a biogeographic angle, allopatric species or populations are those that do not have overlapping geographic levels.
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Answer:
Its B
Explanation:
Sympatric speciation
what are the proteins that are found all throughout the cell
Animal cells or plant cells??
Answer:
Explanation:Ribosomes are found in many places around a eukaryotic cell. You might find them floating in the cytosol. Those floating ribosomes make proteins that will be used inside of the cell. Other ribosomes are found on the endoplasmic reticulum.
Which example describes an adaptation of a blueberry plant in the summer? Buds begin to form. The leaves turn red. The plant is dormant. Berries and leaves are fully grown.
Answer:
Berries and leaves are fully grown.
Explanation:
Blueberry plants are native to the northern hemisphere and belong to the Vaccinium genera and Ericaceae family.
They are deciduous shrubs that that are grown in cold-weather regions. They exhibit winter dormancy, which they induce with exposure to hours of cold.
If the winter is not hard, the plants might flower during this season, but if not, they do it at the beginning of the spring.
Blueberry plants can adapt to variable climatic conditions. However, temperatures lower than 5ºC might damage the buds. And temperatures over 36ºC might also damage the fruits.
Sunny summers favor the fruit quality and avoid pathogen development.
The collecting season varies according to the plant variety, but usually, harvests are done from late spring to late summer.
During the autumn, leaves turn reddish before falling, and buds develop once the vegetative growth is over.
Which option identifies the information that could best help the grower complete the estimate of harvest date in the following scenario?
Burt is grower and must make the arrangements for harvesting and shipping a crop weeks before the plants can reach maturity. He must make an estimate of likely maturity date based on known and predicted information. Burt knows the base temperature of the crop, the specific daily GDD units of the season to date, and the total GDD necessary before the plants can be ready for harvest.
ten-day weather forecast from a website
full-year weather forecast from an almanac
average daily highs and lows for the upcoming months
estimated number of days from planting to maturity
Answer: full-year weather forecast from an almanac
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Answer:
average daily highs and lows for the upcoming months
Explanation:
did it and just got it right
Help me on this plz get this correct
Answer:
1. Eagle
2. Primary
3. The population of snails would go up
4. The same amount i believe
5. The Mitochondria
Which kind of division of time on the geologic time scale has the name
Pleistocene?
Answer:
An epoch
Explanation:
I got it wrong and it epoch Red Riot out
What is the difference between asexual and sexual with plants??
I WILL GIVE BRAINIEST IF CORRECT.
Answer:
see below hope this helps !
Explanation:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent.
Sexual reproduction involves two parents and produces offspring that are genetically unique.
Answer:
asexual plants are plants that can reproduce without another specimen and have hosts that carry pollen or whatever needed to reproduce and sexual plants need another plant to reproduce
Explanation:
:) hope this helps <3
Why do you think it is necessary for there to be variation in a population in order for evolution by natural selection to occur?
Variations in the population are necessary because it allows some individuals to acclimate to the environment while sustaining the survival of the population.
What do you mean by Genetic variations?Genetic variations may be defined as the existence of differences in sequences of genes between individual organisms of a species.
Natural selection randomly favors or unfavors one genotype at a time. If there will not be any genetic diversity, it may lead to either extinction or population explosion of a particular genotype.
The genetic variations also depend on the relative fitness of a particular species. In order to resist at least one genotype of given species, genetic variations are important.
Therefore, variations in the population are necessary because it allows some individuals to acclimate to the environment while sustaining the survival of the population.
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Sucrose is a carbohydrate produced naturally in plants. It is composed of glucose and fructose. Carbohydrates are made by plants which derive their food resources from photosynthesis. What molecules used in photosynthesis are rearranged to produce carbohydrates? Choose ALL that apply. A)ATP B)water (H2O) C)oxygen (O2) D)methane (CH4) E)carbon dioxide (CO2)
Answer:
b,e
Explanation:
i just took it
Carbon dioxide (CO2) and water (H20) are the molecules used in photosynthesis and rearranged to produce carbohydrates.
WHAT IS PHOTOSYNTHESIS:
Photosynthesis is the process by which green plants manufacture their food (glucose) using energy captured from sunlight. Photosynthesis involves series of biochemical reactions, however, the carbon dioxide and water are the two molecules combined. The general equation is represented as follows:6CO2 + 6H2O → C6H12O6 + 6O2
Therefore, carbon dioxide (CO2) and water (H20) are the molecules used in photosynthesis and rearranged to produce carbohydrates.
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Based on the Nebular theory, which of these is a step in the formation of the center of a new planetary system?
A. evaporation of condensed gases due to heat
B. combination of condensed gases due to gravity
C. contraction of condensed gases due to nuclear fission
D. expansion of condensed gases due to nuclear fission
Answer:
The answer is the evaporation of water. As the gas begins to collapse, thermonuclear fusion as a result of the immense gravity at the center of the cloud results in the generation of immense heat and radiation that turns solids and liquid into gaseous form, close to the center of the cloud.
Explanation:
This resulted in the nuclear fusion of gases and dust to create the sun and planets at the outer flattened portion of the disk." The sun forms in the center of the cloud since the gravitation effect that drives thermonuclear fusion are strongest in this region. Planets form in the outer regions of the accretion disks where matter attract each other into clumps and gain even more gravitational pull to yank even more matter.
Hope this helps.
Answer:
A: evaporation of condensed gases due to heat.
Explanation:
Here are the 6 steps:
Nebula, protosun forming, spinning planetary disk, protoplanets forming,
Shock waves from a nearby supernova explosion.
It also begins to flatten.
Protosun.
When the gravitational forces begin to fuse hydrogen into helium (fusion)
Protoplanets.
Inner protoplanets - most of their lightweight gases are boiled away
The last step is the answer.
Which is a characteristic that distinguishes members of the
plant kingdom from members of the animal kingdom?
Select one:
A. Plants store genetic information in the nucleus of their cells
B. Plants are motile primary consumers
C. Plants are multicelular
D. Plants are autotrophic
Answer:
D. Plants are autotrophic
Explanation:
Both plants and animals are eukaryotic, meaning they contain a nucleus with genetic information, so that crosses out A. I don't know what motile primary consumers are. Assuming, they're primary consumers, primary consumers are those that eat producers, so in this case, this would elminate B. Both plants and animals are multicellular. Plants ARE autotrophic, meaning they produce their own food. Animals, however, have to get their own food, either by hunting or scavaging.How long did the cicadas in the video live underground?
O A. 17 days
O
B. 7 months
O
C. 7 years
O
D. 17 years
Answer:
D. 17 years
Explanation:
if you were in 2004 cicadas were around that time. 2004 to get to 2021 is 17 years so its D
hope this helped
How would the Earth's climate change if its obliquity shifted from 23.4° to 0°, and all other factors remained the same?
A-Global warming would increase rapidly.
B-It would shift the Earth into a global ice age.
C-The seasonal changes would be more extreme.
D-There would be no seasons.
Answer:
There would be no seasons.
Explanation:
The tilt of the Earth's axis is what causes seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere. If there was no tilt, the rays hitting the Earth would have minimal changes, meaning no seasons.
Will give brainliest... Why does a population not level off during the same year it reaches zero population growth?
Answer:
Because parents will still be living for decades. What factors contributed to the world's overall population growth in the last 150 years? Having ample food, shelter, water, and technology.
Explanation:
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