Variation in different species of organisms is called:

a.

evolution

c.

adaptation

b.

natural selection

d.

species diversity

The most significant greenhouse gas emitted in large quantities by human society is

Refrigeration slows the growth of bacteria in foods. a. True b. False

Why don't humans breed like bunnies? wouldn't it be more efficient to have lots of kids lots of times?

Which is not considered a sex-linked trait? purple flower color in pea plants eye color in fruit flies red-green color blindness in humans hemophilia in humans

In biology lab, you are observing specimens of muscle cells and nerve cells, as examples of

Plant cells can synthesize organic molecules and later break them down to extract that energy for performing life processes. These activities require direct interaction between the

Which of the following is a key element of naturalism

Jan noticed that when she put a tomato in water, it sank. When she put an apple in water, it floated. Why did the tomato sink while the apple floated?

an ___organism has different types of cells that are specialized for various functions. (fill in the blank)

What process reshuffles allele combinations between homologous chromosomes? a. genetic recombination b. asexual reproduction c. independent assortment d. mitosis