22. Oil is used mostly in the ___
sector.
transportation
O cooking
O manufacturing

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.