Of the four types of T cells, only the ____________________ T cells destroy infected body cells. Fill in the blank(s) with the appropriate word(s)

Where are the largest reserves of carbon on the planet?

A. soil and rocks B. plants, algae, and cyanobacteria C. rocks and fossil fuels D. volcanoes and hot springs E. the oceans

Respiration in the human body relies on ____

a. exocytosis and endocytosis b. facilitated diffusion c. osmosis d. simple diffusion e. active transport

A cell is called ________ if it has the ability to form any body tissue or even an adult animal.

Fill in the blank(s) with the appropriate word(s).

The first successful land plants, even though they lacked vascular tissue, were the

A. mosses. B. coniferous trees. C. ferns. D. liverworts and hornworts.