QUESTION 5 Humans often accelerate the process of eutrophication or lake \"aging

Question

QUESTION 5

Humans often accelerate the process of eutrophication or lake "aging" which often leads to "algal blooms". Water pollutants coming from which substances are usually responsible for this?

heavy metals from industry

concentrated acids

nutrients from fertilizers or detergents

oil   

QUESTION 6

Identify the type of natural resources that exist in a fixed quantity, or stock, in the earth’s crust. On a time scale of millions of years, geological processes can renew such resources, but in terms of shorter human time scales, we can deplete this type of resource faster than nature can form them.

fossil fuels

food resources

solar energy

cultural resources

QUESTION 7

Increased pollution emitted into the air, land, and water due to the increased use of machines in factories for large scale production of goods occurred during which cultural revolution?

The Industrial Revolution

The Agricultural Revolution

The Information-globalization Revolution

The Sustainable Revolution

QUESTION 8

Industrialized agriculture

is practiced on about 90% of the world's cropland.

is more common in less developed countries than it is in more developed countries.

produces most of the world's food today.

none of the above

QUESTION 9

Industrialized livestock production generates 18% of the world's climate-changing greenhouse gases, which is more than all of the world's cars, buses, and planes. Most
of this comes from

pig farms.

rotting livestock food.

cattle belching.

chicken manure.

QUESTION 10

It is true that

the energy stored in fossil fuels ultimately came from the sun.

energy can neither be created nor destroyed.

high quality energy can be converted to low quality energy.

All of the above statements are true.

QUESTION 11

It is true that

up to this point the U.S. has not had a great "Ecological Footprint" because our population growth has been relatively slow.

up to this point, less developed countries have caused most of the environmental degradation to this planet.

in the near future, China is expected to surpass the U.S. as the world's greatest consumer of oil.

the world's oil supply is expected to run out completely within 20 years.

QUESTION 12

Of the different types of water pollutants, which of the following will not eventually be broken down by microorganisms?

organic waste from sewage

heavy metals

oil

both "a" and "c"

QUESTION 13

Of the following types of fossil fuels, which releases the smallest amount of air pollution when burned?

wood

natural gas

coal

oil

heavy metals from industry

concentrated acids

nutrients from fertilizers or detergents

oil   

Explanation / Answer

Answer 5:

C,

Lake aging or eutrophication is caused by access of nutrients owing to discharge of fertilizers and detergent.

Answer 6:

A, Fossil fuels

fossil fuels are formed in millions of years but they are non replenishable in shorter span.

Answer 7:

A, Industrial revolution

Answer 8.

C, cattle belching

Cattle raring for milk and manure are the major source of greenhouse gas emission generated through by livestock.

Answer 10:

D, All the above

Answer 11:

C, China will surpass U.S. in oil consumption in near future

Answer 12:

B, heavy metals

Answer 13:

B, Natural Gas release least air pollution

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