7.4-Water Pollution - 3

Most ocean pollution is related to ____ activities.

• Natural

• Extraterrestrial

• Human

• Animal

The solution to pollution is ____.

• Prevention

• Concentration

• Neutralization

• Dilution

The ____ coats the feathers of birds, reducing their ability to stay warm.

• Natural gas

• Honey

• Petroleum

• Oil spill

Dumping large amounts of wastes into the ocean threatens ____ organisms.

• Terrestrial

• Freshwater

• Marine

• Amphibious

Fish are often raised in artificial ponds and bays that replace and destroy ____.

• Un-natural reserves

• Marine sanctuaries

• Natural habitats

• Wildlife preserves

The practice of raising fish and other water-dwelling organisms for food is called ____.

• Atmospheric-culture

• Land-culture

• Aqua-culture

• Ice-culture

When freshwater enters the ocean, the salinity ____. Some organisms either move to saltier water or die.

• Decreases

• Increases

• Remains constant

• Fluctuates

Oil that is accidentally spilled into the ocean is called ____.

• Ocean salinity

• Seabed cracks

• Oil slick / oil spills

• Water freezing

The freshwater run-off from land after heavy rains is an example of ____.

• Animals activity

• un-natural disasters

• Natural occurrences

• Human activities

Chemical, sewage, fertilizers, pesticides.

• Examples of human activities

• Examples of animals activities

• Examples of terrestrial activities