What happens to DNA before a cell divides

How do the kidneys clean the blood?

What happens to the energy level of particles when melting occurs? A) It increases B) It decreases C) it stays the same D) It increases and decreases rapidly

8. A major misconce ption about natural selection is that this mechanism "gives organisms what they want or need so they can adapt to an environment." Explain why this is not correct.

Which of these statements is correct? 1) Eukaryotic cells do not have ribosomes 2) Eukaryotic cells do not have chloroplasts 3) Prokaryotic cells do not have a cel wall 4) Prokaryotic cells do not have a nucleus

When does the blastocyst form

What is the difference between science an pseudoscience

Which statement best describes heredity

Which of the following cannot be cured with existing drugs?

What is another name for skeletal muscle? involuntary muscle connective muscle voluntary muscle interactive muscle reactive muscle?

Water can leave the air as a result of which processes? A. infiltration or transpiration B. precipitation or evaporation C. evaporation or transpiration D. condensation or precipitation