Environmental Science MCQs

Question 1

The intermediate developmental stages in the ecological succession is called

Accepted Answer

sere

Answer

ecesis

Answer

climax

Answer

nudation

Question 2

The final stable community in an ecological succession is called the

Accepted Answer

climax community

Answer

final community

Answer

ultimate community

Answer

seral community

Question 3

Typically, water vapour occupies about what percentage of the air's volume near the earth's surface?

Accepted Answer

Less than 4 percent

Answer

About 78 percent

Answer

About 21 percent

Answer

Close to 10 percent

Question 4

Heavy dust can cause

Accepted Answer

closure of stomata

Answer

leaf blights

Answer

opening of stomata

Answer

browning of leaves

Question 5

This holds a planet's atmosphere close to its surface:

Accepted Answer

Gravity

Answer

Radiation

Answer

Cloud cover

Answer

Moisture

Question 6

During the afternoon the greatest temperature difference between the surface air and the air several meters above occurs on a:

Accepted Answer

Clear, calm afternoon

Answer

Clear, windy afternoon

Answer

Cloudy, calm afternoon

Answer

Cloudy, windy afternoon

Question 7

Ideal conditions for a strong radiation inversion:

Accepted Answer

Clear, calm, dry, winter night

Answer

Clear, calm, moist, summer night

Answer

Cloudy, calm, moist, winter night

Answer

Cloudy, windy, moist, summer night

Question 8

Example of primary pollutant

Accepted Answer

hydrocarbons

Answer

SO2

Answer

NO2

Answer

CO

Question 9

In a photochemical smog, which gas is an eye and mucous membrane irritant?

Accepted Answer

N2O

Answer

SO2

Answer

O3

Answer

CO2