Unit 6 EnvSci Test Review: Human Impact

How can groundwater become contaminated?

• agricultural run-off and farmland erosion

• waste water from factories and water treatment facilities

• acid rain and air-born pesticides

• All of these can contaminate groundwater!

When certain air pollutants mix with water vapor, ____ can form.

• ozone

• acid rain

• thunderstorms

• tornados

Mineral mining creates concerns with environmental agencies because of their potential to

• create groundwater pollution.

• cause acid rain to form.

• release ozone into the stratosphere.

• increase global warming.

Phosphorous and nitrogen from fertilizer wash into bodies of water and cause

• ocean acidification.

• ground level ozone pollution.

• acid rain.

• algae blooms.

This air pollutant is formed in the atmosphere when nitrogen oxides react with other compounds when they are activated by the sun's energy.

• ozone

• acid rain

• carbon dioxide

• VOC's

What negative effect do algae blooms have on industry?

• It clogs the pumps on oil rigs.

• Airlines have to fly different routs to avoid it.

• Transport ships cannot move through the blooms so they must travel longer routes.

• Sea life dies off and this hurts commercial fisherman, shrimpers, etc.

Smog mixing with water vapor can cause _____ which can travel quite far before causing problems.

• global warming

• acid rain

• holes in the ozone layer

• groundwater contamination

Medications and cosmetic ingredients are found in remote lakes and streams. Scientists believe they move great distances through the groundwater. The enter the water table (groundwater) from

• septic tank systems

• stormwater runoff

• both septic tank systems and stormwater runoff

• water treatment plant discharge

What contributes the most to poor air quality?

• Overfishing

• Deforestation

• Industrial factories

• Industrial farms

What chemical or chemicals are harmful to the stratospheric ozone layer?

• CO₂

• CFC's, Freon, aerosols

• criteria air pollutants

• nitrogen oxides