ENVIRONMENTAL ECOLOGY

Question 0

Coal is regarded as the worst environmental pollutant when burnt because its burning releases larger amounts of:

Answer 0

Carbon dioxide
Sulphur dioxide
Nitrogen oxides (NOx)

Question 1

Which atmospheric gases constitute GREENHOUSE GASES?

Answer 1

There are many gases which contribute to the greenhouse effect.The following are considered to be GHGs,The number after the name indicates the equivalent greenhouse gas effect compared to CO2 (the principle manmade greenhouse gas)
Water vapour (H2O)= ?
Carbon Dioxide (CO2)= 1
Methane (CH4)= 21
Nitrous Oxide= 298
Sulphur Hexafluoride (SF6)= 22,200
Chlorinated Fluorocarbons (CFC5)= 1000 to 9000
Note:Water vapour is odd one in the list as it is naturally occurring.
It may be responsible for more than 30% of the greenhouse effect.

Question 2

More than 50% of the worlds coal deposits are held by:

Answer 2

USA,Russia & China

Question 3

Crude oil is sometimes termed sweet because:

Answer 3

it is mildly sweet due to low sulphur content

Question 4

The ultimate source of energy in a hydroelectric power station is:

Answer 4

solar energy

Question 5

The biosphere is the zone of earth where life is found. It includes parts of:

Answer 5

hydrosphere
lithosphere
troposphere

Question 6

Excessive emissions of CO2 are responsible for ocean acidification. It means that:

Answer 6

The surface waters become less alkaline