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.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Which is the correct formula for photosynthesis

Archaebacteria use for movement. celia flagella pili cell walls