1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
insens350 [35]
3 years ago
12

In a forest ecosystem including rabbits, wolves, foxes, and plants, what are two possible reasons the rabbit population might de

cline
Hint: What do animals need to survive? What can hurt them?
Biology
2 answers:
tigry1 [53]3 years ago
8 0
Well, since rabbits are hunted by both foxes and wolves, if those populations start to incline, they are going to need more food, hence, eating and killing more rabbits, which would bring their population down. Another reason is that if the grass doesn't grow plentifully, the rabbits won't have enough food to survive, since they eat grass, so their population will decline due to a lack of food.

Hope this helps! Good luck!
Finger [1]3 years ago
4 0
The rabbit population may decline if the plant life starts to die or there’s an increase in the fox or wolf population.
You might be interested in
In the year 100, Ptolemy introduced the geocentric model of the solar system. By the year 1542,
Alecsey [184]

Answer: Ptolemaic system, also called geocentric system or geocentric model, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE and recorded by him in his Almagest and Planetary Hypotheses. The Ptolemaic system is a geocentric cosmology; that is, it starts by assuming that Earth is stationary and at the centre of the universe. The “natural” expectation for ancient societies was that the heavenly bodies (Sun, Moon, planets, and stars) must travel in uniform motion along the most “perfect” path possible, a circle. However, the paths of the Sun, Moon, and planets as observed from Earth are not circular. Ptolemy’s model explained this “imperfection” by postulating that the apparently irregular movements were a combination of several regular circular motions seen in perspective from a stationary Earth.

Explanation:

i hope this help

8 0
3 years ago
How do temperature and concentration of monounsaturated phospholipids change the rate at which molecules permeate the plasma mem
Nikitich [7]

Answer: At low temperatures the fluidity of the membrane decreases and it favors fluidity. The higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable).

Explanation:

The plasma membrane is a lipid layer that delimits the entire cell, dividing the extracellular medium from the intracellular (the cytoplasm of a cell). They are composed of phospholipids, which are molecules composed of glycerol, a phosphate group and two lipid chains (such as fatty acids). Glycerol is a three-carbon molecule that functions as the backbone of this membrane. A geometry is formed that allows the phospholipids to line up side by side to form broad sheets. They are insoluble in water, but their unique geometry causes them to aggregate in layers without any energy input, as they possess a hydrophilic phosphate head and a hydrophobic tail consisting of the two fatty acid chains. The hydrophilic heads of the phospholipids in a bilayer membrane face outward and are in contact with the aqueous fluid inside and outside the cell. Because water is a polar molecule, it readily forms electrostatic (charge-based) interactions with the phospholipid heads.

Selective permeability is a property of the plasma membrane and other semipermeable membranes that allow only certain particles to pass through them. In this way,<u> those particles that are needed by the cell can enter the cell and those that are not useful to the cell are prevented from entering</u>. In the same way, the cell can eliminate the particles it has produced as waste. In this way, the entry and exit of substances through the membrane is regulated and the correct functioning of the cell is achieved.

For a particle to be able to cross the plasma membrane it must have a size equal to or smaller than the pores of the membrane, it must have the opposite charge to the charge of the membrane or simply have a neutral charge, and if it is larger than the pores it must be dissolved in a solution, decreasing its size and thus be able to enter the cell through the membrane.  

Plasma membranes are fluid and this fluidity depends on their lipid composition and temperature. Depending on the temperature, membrane lipids can be found in two different states or phases: gel (solid-like, with more rigid hydrocarbon chains) and liquid crystal (more fluid, with more mobile hydrocarbon chains). At low temperatures the fluidity of the membrane decreases and in these conditions the increase of its concentration favors fluidity. The temperature at which the transition from one state to the other occurs is the phase transition temperature (Tc). At values below Tc, the bilayer is in the gel state and at higher values it passes to the liquid crystal. It should be noted that there is an equilibrium between the gel state and the liquid crystal state and that the characteristics of the lipids of the bilayer condition the transition temperature. In the case of bilayers consisting of only one type of lipid, the Tc is well defined. But biological membranes are complex lipid mixtures and the transition from one state to another occurs over a range of temperatures. The presence of short-chain or unsaturated fatty acids reduces the transition temperature, while saturated fatty acids and the increase in the length of the hydrocarbon chains cause this temperature to rise. <u>Then, phospholipids with unsaturated fatty acid tails cannot bind as tightly due to the bent structure of their tails. For this reason, a membrane of unsaturated phospholipids remains fluid at lower temperatures than a membrane of saturated phospholipids</u>.  

The fluidity of a membrane is the ability of a molecule to move through it.<u> In short, the higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable) the membrane will be even at low temperatures</u>. However, <u>at low temperatures the fluidity of the membrane decreases (lower permeability) but the effect will depend on the composition of the fatty acids</u>. To determine the exact permeability, it is necessary to relate the concentration of unsaturated bonds and the length of the fatty acids in the phospholipids and the temperature.

8 0
3 years ago
How does mutation relate to variation
Anastasy [175]

Answer:

Mutation is the source for new genetic variation: Genetic variation is brought about by random mutation. Without mutation, genetic variation cannot occur. Mutation is a change in the genetic code in DNA and can lead to a change in the protein that is coded for that segment of DNA.

Explanation:

Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.

8 0
3 years ago
Artificial selection has been used by humans to
spayn [35]

Answer:

Its been used by humans to take the best traits from a species and pass them on like bigger bodies in cows for more meat and bigger muscles in horses for faster racing potential.

7 0
3 years ago
Dr. Grey discovers a new drug that she hypothesizes will increase fat storage in rabbits. She designs an experiment to test her
melamori03 [73]
In the experiment, the independent variable is the drug amount. Experiment group is given certain amount of drug, control group is not given the drug. The dependent variable is the body fat. I think you means the control is the living environment including food and water.
5 0
2 years ago
Read 2 more answers
Other questions:
  • Using the nonexperimental method, a researcher collects data on exercise and anxiety from a number of people and finds that exer
    14·2 answers
  • What three parts does a nucleotide consist of?
    11·2 answers
  • What is the relationship between a food chain and an energy pyramid?
    8·1 answer
  • Researchers can manipulate the genes of a mouse so that a single gene in a single tissue either produces an inactive protein (a
    14·1 answer
  • Which technique could be used to evaluate the primary amino acid sequence of a protein?
    13·1 answer
  • There are only three autosomal trisomic conditions (Patau, Edward, and Down Syndrome) where a fetus will survive to birth. Why d
    11·1 answer
  • The evaporation of water from the stomata is known as...
    7·1 answer
  • The particles of an object move _________ when the temperature increases
    14·2 answers
  • Which of these best explains how Earth's surface features are formed by moving tectonic plates?
    15·1 answer
  • Fossil evidence has been used to understand the movement of continental plates. A particular species of animal originated in Asi
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!