Can someone tell me the menstrual cycle :)

Answers

Answer 1

Answer: Menstrual Cycle is a monthly time when a overy releases an egg to be fertilized by sperm.

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99) Density-dependent factors include factors such as __________, while density-independent factors include factors such as __________.A) temperature; floods C) disease; parasites D) competition; storms
How does the carbon locked in shells of marine organisms move back to the atmosphere?A through subduction of deposits and volcanismB through the process of respiration in these organismsC through death and decompositionD through the microbial process of ammonificationE through chemical reactions in acidifying oceans

Which human activity would most likely have a positive impact on the environment?

Answers

Recycling is the best act that us humans can do in order to provide a better environment. With the numerous amounts of garbage that we dispose, we forget to check that some can still be recycled into a different type of product. Recycling can effectively helps us prevent global warming as well.

The heart is called the _____ muscleA : striated

B : smooth

C : Cardiac

Answers

The heart is called the c.cardiac muscle

Natural selection requires genetic variation, competition for limited resources, overproduction of offspring, and unequal reproductive success. The subset of finches that is capable of eating large seeds, while many others eat small seeds, is an example of which requirement?

Answers

Answer:

Genetic variation

Explanation:

Darwin studied that different populations of finches on Galapagos island that are descended from the same species. Some species are evolved to eat nuts and large seed, some eat small seeds and some feed on insects and nectar.

So genetic variation occurred in different populations of finches which enabled them to bring changes in their beak according to the food resource they have chosen to feed on.

So in Darwin's finches, genetic variation leads to new species which is a type of natural selection. Therefore subset of finches that can feed on large seeds and small seeds is an example of genetic variation.

Which part of the cell membrane is polar and allows the cell to exist in water

Answers

Answer:

The Phospholipid head which contains a phosphate group

Explanation:

The cell membrane contains phospholipids.

The Phospholipid bilayer is made up of phospholipids

Phospholipids consist of a hydrophobic tail (non-polar and is repelled by water)

It also consists of a polar head which is polar because it has a phosphate group which is negatively charged and therefore is hydrophilic (water-loving)

Phosphate groups are polar and allow the cell to exist in water.

Study the following food chain: grass → rabbits → snakes → hawks. This chain supports the assumption that each populationA. supports the next trophic level.
B. is always larger than the one before it.
C. is a species of herbivore.
D. is a carnivore.

Answers

grass → rabbits → snakes → hawks. This chain supports the assumption that each population supports the next tropic level
because it tells about the next tropic level and flow of energy from one to the next
so correct option i conclude is A
hope it helps

The chain supports the assumption that each population : A. Supports the next trophic level.
Which means that the lower level will become the source of energy of the higher level organisms

Hope this helps

Scientists base many of their investigations on questions that test accepted theories. Which outcome of an investigation would cause a scientist to ask a different question?

Answers

Answer:

A scientist would ask a different question when he or she founds that the observed results are different from the expected results.

Explanation:

When one expects something and gets something else, then one is having a big enough cause to ask for new questions and initiate a new investigation. Scientific investigation is the process by which the researchers and scientists use a planned approach to answer questions regarding the world around us.

The observed results are different from the expected results.

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Which of the following would you expect to find in a primitive community?a. deer b. trees c. shrubs d. algae Succession is _______. a. harmful to ecosystems b. a natural recovery process c. unnecessary for ecosystem recovery d. a one-time event

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Which of the following is true about soil color? a. A dark color indicates that the soil is poor in organic matter. b. Bright yellow and red colors indicate large amounts of organic matter. c. Yellow or red hues in the soil indicate the presence of iron or aluminum. d. Yellow or red hues in the soil indicate the presence of calcium or magnesium.

How can reduced precipitation lead to limited water availability?a. It may lead to overuse. b. It makes water nonrenewable. c. It contaminates current supplies. d. It may lead to drought.