All living organisms are composed
a.
one or more cells.
b.
at least three cells.
c.
at least 100 cells.
d.
only one cell.

Which image shows labeled organelles that are present only in plant cells?

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?