Why do body cells in plants and animals have an even number of chromosomes?

When rocks crack parallel to the surface of the rock it is called ___?

Why does the mid-day winter sun not produce as much intense heat as the mid-day summer sun? A. the Earth is further from the Sun B. the Sun is closer to the horizon C. the Sun's light is spread and diluted more D. the Sun is not up as long E.

Why is photosynthesis and cellular respiration important to my life?

Water molecules attracted to other water molecules. this property called?

Mendel conducted experiments with pea plants in order to:

What do gradualism and punctuated equilibrium have in common? A. They are both explanations of the rate of evolutionary change. B. They are both explanations that were put forth by Darwin. C. They both discredit the theory of evolution. D.

The human immunodeficiency viris (hiv) is a bloodborne pathogen that is spread by

A cell that is undergoing mitosis is examined with a light microscope. an observation that would allow for identification of the cell as an animal cell rather than a plant cell would be

A da capo aria opens with two contrasting sections, A and b. What will the singer do after singing the B section? a. Sing the A section againB. End the ariaC. Repeat the B sectionD. Go to the C section

What is a population? How do different populations affect one another?