SBF 2

_____ and _____ are human activities that are increasing the amount of carbon dioxide in the atmosphere.

• deforestation, combustion

• photosynthesis, respiration

• combustion, respiration

• decomposition, deforestation

Acid rain is caused by _____ and _____ combining with water vapor in the atmosphere.

• phosphates and nitrates

• carbon dioxide, CFCs

• sulfur dioxide, nitrogen oxide

• sulfur dioxide, carbon dioxide

Eutrophication is caused when _____ and _____ in fertilizers and animal waste run into nearby water sources.

• carbon dioxide, sulfur dioxide

• nitrates, phosphates

• sulfur dioxide, CFCs

• carbon dioxide, nitrates

Ozone depletion is caused by excessive _____ from aerosols and air conditioning units.

• sulfur dioxide

• carbon dioxide

• CFCs

• nitrates

Global warming is caused by excessive _____ in the atmosphere.

• CFCa

• carbon dioxide

• sulfur dioxide

• nitrates

_____ explains how the concentration of a chemical increases as it travels up a food chain.

• biomagnification

• bioaccumulation

• photosynthesis

• decomposition

_____ are non-native organisms that tend to disrupt food chains.

• parasites

• indigenous species

• invasive species

• mutualists

Organic molecules contain _____ and are found in living organisms.

• phosphorus

• nitrogen

• hydrogen

• carbon

_____ are made of monosaccharides and are quick sources of energy.

• nucleic acids

• carbohydrates

• proteins

• lipids

_____ is a complex carbohydrate found in the plant cell wall.

• starch

• cellulose

• glucose

• glycogen