Numerous neighborhoods are built around an existing incinerator. What impact(s) could this have on the surrounding neighborhoods? I. Toxic chemicals in leachte can leak into groundwater.
II. Mercury and lead can be released into the air.
III. Residents may be exposed to heavy metals through contact with the ash.

- I and II
- I and III
- II and III
- II only

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

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?

Which of these definitions have been paired with the correct type of cell?