Why does it take a long time to develop a new variety of tomato?

a.
changes in traits happen gradually, over many generations.

b.
tomatoes cannot acquire new traits.

c.
a species cannot change over time.

d.
many plants resist change.

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.

What is the purpose of presenting a false dilemma in a speech?