Preparation for 9 Week's Exam Environmental Sci

What are the three main PROCESSES that are involved in the water cycle?

• groundwater, aquifer, or lake

• Solid, liquid, or gas

• Evaporation, condensation, and precipitation

What is an aquifer?

• a lake

• groundwater

• a river

When water vapor is cooled it condenses (clumps together) but does not fall. This is called:

• condensation

• precipitation

• evaporation

What are some sources of water pollution?

• run-off from fertilized lawns and fields, soil erosion, animal and human waste

• carbon dioxide, carbon monoxide, and nitrous oxides

• rain, snow, sleet, and hail

What lives on the root nodules of certain plants (legumes), changing nitrogen into ammonia?

• assimilating slugs

• denitrifying fungi

• nitrogen-fixing bacteria

Plants use the nitrates to create _____ needed to live and grow?

• trunks

• proteins

• roots

Plants and animals get nitrates by eating ____?

• sugar crystals

• plants and animals

• fats and lipids

Nitrogen buildup in the air can cause ___ or ___?

• exhaust fumes or burning plants

• limestone or shale

• smog or acid rain

Although nitrogen makes up about 70% of our air, can plants or humans breathe it in?

• yes

• no

• ???

What is an invasive species?

• a species that, when low in population, indicates the entire ecosystem is in trouble

• a non-native species that spreads from the point of introduction and becomes abundant

• a species which has a disproportionately large effect on its natural environment