Jake set up an experiment. He set two aquariums with five fish of the same type and size. Aquarium one was very small, only one cubic foot. Aquarium 2 was very large at 10 cubic feet. Each day the fish were fed the same amount of food and vitamins, at the end of 5 months Jake measured the fish by length. His results are shown in the bar graph above. What might be the question Jake is asking in his experiment?
A. What fish food cost the most?
B. What fish food makes fish grow faster?
C. Does aquarium size affect growth rate of fish?
D. What type of fish food do fish like the best?
Once identified the controlled, the independent, and the dependent variables, we can say the question is C. Does aquarium size affect the growth rate of fish?
What is the independent variable?
Refers to all the variables in an experiment that provoke a response in another variable.
An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it.
It changes to analyze its effects on the dependent variable.
What is the dependent variable?Refers to the variable whose response depends on any change in the independent variable. Depending on how the independent variable is modified, the dependent variable changes.
What is the controlled variable?During an experiment, the controlled variables are kept constant. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
In the exposed example,
the independent variable ⇒ Aquarium size ⇒ 1 cubic foot and 10 cubic feetthe controlled variable ⇒ food and vitaminsthe dependent variable ⇒ fishes growth.The question that Jake is asking in his experiment is Does aquarium size affect growth rate of fish? Option C.
Since he only needs to know how the size of the aquarium affects the animal's growth, he needs to keep constant other influencing variables such as food and vitamins. Otherwise, these other variables might also influence the results.
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Almost 225 soccer fields can fit in one square mile . Approximately how many could you have to yourself if you lived in a region containing 25 people per square mile ? Or 100 people per square mile ?
(a) The size of the soccer field you can have to yourself if you leave in a region containing 25 people per square mile is 9 fields.
(b) (a) The size of the soccer field you can have to yourself if you leave in a region containing 100 people per square mile is 2.25 fields.
Size of soccer field to yourself
The size of the soccer field you can have to yourself if you leave in the given regions is calculated as follows;
For 25 people per square mileSize per person = (225 field/mi²) / (25 persons/mi²)
Size per person = 9 field per person
For 100 people per square mileSize per person = (225)/100
Size per person = 2.25 field per person
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Tyrannosaurus rex Description of adaptations an organism had that allowed it to survive in the past environment.
Adaptation gives an organism the ability to survive in a particular location.
What is adaptation?Adaption is the ability of an individual or organism to live and survive in an environment.
There is competition in the environment but the ability an individual to survive despite the competition is adaptability.
Therefore, Adaptation gives an organism the ability to survive in a particular location.
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Which of the following is evidence that supports the Big Bang theory?
There are three correct answers
A. the redshift of most galaxies
B. the measurable expansion of the universe
C. the existence of cosmic background radiation
D.the lack of cosmic background radiation
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GIVING OUT BRAINLY STARS!!!!!!
A closed adoption is best described as an adoption in which (5 points)
A. the birth mother and adopting family do not remain in contact after the adoption process is completed
B. the birth mother remains in contact with the adopting family, but the child has no knowledge of his or her adoption status
C. the child is adopted by someone biologically related and who will allow the birth parent to be active in the child's life
D. the child is raised with knowledge about his or her adoption and maintains a relationship with the birth mother or birth parents
Answer:
A. The birth mother and adopting family do not remain in contact after the adoption process is completed.
Find out why mars would be a good choice for a human colonly. Also give some bad choices;
sight your sources '
helpp ill mark brainliest
Answer:
It has air but also lakes can be built to provide water to people living on it
Red apple weighs 245grams green one weighs 167grams which one more attracted to the earth
Answer:
the Red apple weighs is more than the green one soo,the Red apple is more attracted to the earth
1. How is a food chain different from a food pyramid?
Answer:
What are some differences between a food chain, web, or energy pyramid? Food chains show a limited feeding relationship between only a few organisms. Energy pyramid is the visual representation of the amount of energy, population, or biomass at each trophic level.
Answer:
A food chain represents the linear relationship between organisms for food. On the other hand, a food pyramid represents the optimal number of servings to be eaten each day from each of the basic food groups
Explanation:
1. To treat constipation if lifestyle changes have failed to resolve the constipation.
2. To provide relief once it is certain that diarrhea is neither infectious nor toxic.
3. Medicine against high blood pressure
4. Pain reliever
5. To neutralize acid in the stomach to relieve pain.
6. For severe depression
7. Treatment for bacterial disorders.
8. To help people clear blocked nasal passages and sinuses
9. To reduce fever
10. used to reduce a high temperature
please help me with this ASAP!
ireally need it
Why is sunlight important to all aquatic ecosystems?
Pick a answer
---------------------
A. Sunlight allows fish to see their surroundings, even at depth.
B. All of the other answer choices
C. Aquatic producers need sunlight to make food and release oxygen.
D. Aquatic organisms cannot carry out life processes in the dark.
Answer:
Sunlight stimulates the growth of phytoplanktons which belong to the first trophic level in an aquatic ecosystem pyramid. If these do not exist, aquatic ecosystem would also disappear.
Where would you expect to find the most good, fine soil
Answer:
I will find it in the forest or in the mountains
2. Claim, Evidence, Reasoning Generalize which communities were most positively affected and which were most negatively affected by the addition of soil invertebrates.
Agricultural communities are positively affected with the addition of soil invertebrates due to enhance of the soil structure.
How do invertebrates affect soil?Soil invertebrates has a good affect on the decomposition rates, soil aeration, nutrient mineralization. It betters the soil so the plants can grow more easily with high productivity.
So we can conclude that agricultural communities are positively affected with the addition of soil invertebrates due to enhance of the soil structure.
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Which method would be best to separate a mixture of oil and water?
Answer:
separation by density
Explanation:
since both oil and water share different densities (just like how ice and water do, ice has a lesser density, therefore it floats.) with oil being denser than water, it sinks.
hope this helps:)
4. Explain why there are very few or no plants at the bottom of the ocean. Name the oceanic zone that has NO
light.
Answer:
After the aphotic zone, there's complete darkness. From 1,000 meters below the surface, all the way to the sea floor, no sunlight penetrates the darkness
Explanation:; and because photosynthesis can't take place, there are no plants, either.
Recessive traits would never reappear if
A. zygotes were given opposite
alleles
B. zygotes did not separate during gamete formation
C. alleles did not separate during gamete formation
Recessive traits would never reappear if zygotes were given opposite alleles.
What do you mean by Zygote?Zygote may be defined as the outcome of the fusion of male and female gametes after successful fertilization.
Recessive traits are only expressed when both the copies of recessive genes are inherited from the parents.
Therefore, recessive traits would never reappear if zygotes were given opposite alleles.
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Does Alaska have more native birds or reptiles?
helpp meee 20 points or else i will fail
explain why you seem to lose your sense of taste when you have a cold
Answer:
viral or bacterial infection will take place in your system and usually block your odor detection center where you will basically lose sense of taste and smell temporarily.
Hope this helps!
Which statements describe how systems interact to produce the fight-or-flight response? Select the two correct answers. A The digestive system creates hormones that are sent to the muscular system, resulting in increased blood flow to muscles. B The endocrine system floods the circulatory system with hormones that affect several other body systems. C The muscular system sends receptors to the circulatory system to increase blood pressure and heart rate. D The digestive system interacts with the excretory system, supplying hormones to slow the production of urine. E The endocrine system supplies the lungs with insulin, allowing increased absorption of oxygen. F The circulatory system experiences a change in blood flow, which allows the muscular system to obtain additional glucose.
Answer:
B) The endocrine system floods the circulatory system with hormones that affect several other body systems.
Explanation:
Which types muscles are controlled by the autonomic nervous system?
Answer:
Smooth Muscle
Explanation:
They are under the control of the autonomixlc nervous system , and contraction or relaxation of the muscle cells. in which case control of the blood pressure, motility of the digestive, respiratory and urinary tracts and secretion.
3/ The trophic levels in ecosystem are labeled as A, B and C
3
Heat
Heat
B
A
Consumers
Sun
Producers
с
Decomposers
Inorganic
Nutrient
Pool
Heat
Which option is correct about the trophic levels?
A The Chas more energy available to it than the B. B. The C uses cellular respiration to obtain energy.
C. The A builds simple compounds from complex D. The B are the most essential components of the
units
ecosystem
Answer:
Explanation:
3/ The trophic levels in ecosystem are labeled as A, B and C
3
Heat
Heat
B
A
Consumers
Sun
Producers
с
Decomposers
Inorganic
Nutrient
Pool
Heat
Which option is correct about the trophic levels?
A The Chas more energy available to it than the B. B. The C uses cellular respiration to obtain energy.
C. The A builds simple compounds from complex D. The B are the most essential components of the
3. If there are 60 cardinals in a 4 square km area, what is the population density?
60 cardinals per square kilometer
60 cardinals
15 cardinals per square kilometer
240 cardinals
Answer:
15 cardinals per square kilometer
Explanation:
60 are total in 4 square kilometers
To find how many there are in only 1 square kilometer divide 60/4
and you get 15 as a result
Is this statement true or false? In the respiratory system, oxygen enters the mouth and nose, and travels down the trachea.
Answer:
True
you breathe oxygen through your nose/mouth then it travels down your trachea to your lungs through your heart into your bloodstream to everywhere else in your body.
I hope this helps
Explanation:
Answer:
true
Explanation:
it does go through the trachea good luck
You can use this app Kleki to draw it pls helpp ill mark bainliest
Answer:
here you go
Explanation:
All living things can reproduce?
*True
*False
How Muscular system work?
Your nervous system (brain and nerves) sends a message to activate your skeletal (voluntary) muscles. Your muscle fibers contract (tense up) in response to the message. When the muscle activates or bunches up, it pulls on the tendon. Tendons attach muscles to bones.
What can keep a motion from being linear
A.friction and gravity
B. Friction and thermal energy
C. Gravity and nuclear energy
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[tex]\: \: \: \: \: \: \: \: \: \: \: \: \: \:[/tex]
A.) friction and gravity[tex]\: \: \: \: \: \: \: \: \: \: \: \: \: \:[/tex]
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Tay-Sachs disease is an inherited disease that is caused by a recessive allele. If a man and his wife, who are both carriers, have three children, what is the probability of each of the following? Show your calculations and give your answers as fractions.
a) All their three children do not have the disease.
d) At least one child is phenotypically normal without the disease.
b) One or more of their three children have Tay-Sachs disease.
c) All three children have the Tay-Sachs disease.
b) One or more of their three children have Tay-Sachs disease.
37/64
a) All their three children do not have the disease.
27/64
(3/4)^3
c) All three children have the Tay-Sachs disease.
1/64
(1/4)^3
d) At least one child is phenotypically normal without the disease.
63/64
quizlet
How do hypertonic, hypotonic, and isotonic solution affect the size of cells? Explain Osmosis and Diffusion.
When a cell is submerged in a hypertonic solution, water escapes and the cell shrinks. There is no net water flow in an isotonic environment, hence the cell size does not vary. Water will enter a cell when it is placed in a hypotonic environment, causing it to swell.
What are hypertonic solutions?A hypertonic solution is one where there is greater concentration of solute outside the cell than inside the cell. Since water follows the most solute, it leaves the cell. This causes animal and plant cell membranes to shrivel up. The plant cell walls remain intact but animal cells will suffer more.
What are hypotonic solutions?Hypotonic solutions is when water molecules move from a high water potential to a low one because of diffusion.
What are isotonic solutions?Isotonic solutions are those solutions that have the same osmotic pressure at a given temperature.
What are cells?A cell is the smallest basic unit of all living organisms. Cells provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized food function. Cells also contain the body's hereditary material (DNA) and can makes copies of themselves.
Part 2:Osmosis and DiffusionOsmosis is the movement of water across the cell membrane, where the water goes from a higher concentration to a lower concentration. It plays an important role in activation, growth, and differentiation of T and B lymphocytes, macrophages, NK cells and other non-hematopoietic cell types.
Cellular diffusion is the process that causes molecules to move in and out of a cell. Diffusion is important as it allows cells to get oxygen and nutrients for survival. In addition it plays a role in cell signaling which mediates organism life processes.
When should most agricultural crops be fertilized?
A In the spring
B. In the fall
C. In midsummer
D. Throughout the growing season
Answer:
A
Explanation:
in the spring
Fertilizer is most effective when used on plants at their peak growing cycle.
What is the main difference between a nematode and a platyhelminth?
Answer:
The main difference between Platyhelminthes and Nematoda is that:
Explanation:
Platyhelminthes consists of flatworms with a thin, dorso-ventrally flattened body whereas Nematoda consists of a cylindrical body, which is tapered to fine ends at each end.