Natural selection chooses which variations become prevalent in a population through environmental pressures. Which of these is an environmental pressure which can lead to natural selection?

two-piece plants with yellow peas are crossed most of their offspring have yellow piece but about 25% of The Offspring have green peas for pea color yellow is the dominant trait and green is the receptive trade what does this tell you about the two

If you were lost on a desert island for two days how would a hormone secreted from your pituitary gland work to prevent you from becoming completely dehydrated

Which of the following are primary lymphoid organs? bone marrow and thymus appendix and spleen lymph nodes and tonsils spleen and thymus

When you eat a candy bar and then decide to go for a walk, energy transformations take place. beginning with the food energy in the candy bar, describe the forms of energy used and the changes in energy that occur as you decide to walk and as you do

Can gases in the atmosphere gain energy from the land and water?

1) which structure regulates breathing rate in humans? A) diaphragm B) lungs C) hypothalamus D) medulla 2) the first forms of life on earth A) appeared about 10,000 years ago B) could easily maintain a stable internal environment C) were

What is a chemical transmitter?

How do groups of organs assemble and work together to make an organism? A. they form other organs B. they form group of cells C. They form organ systems D. They form an ecosystem

What substance is analogous to a factory manager?

What can you conclude about fossil by looking at the layers of rock?