Which one of the following is not used in organic farming?

• Glomus

• Earthworm

• Oscillatoria

• Oscillatoria

Which two of the following changes (1-4) usually tend to occur in the plain dwellers when they move to high altitudes (3500 m or more)?
1) Increase in red blood cell size
2) Increase in red blood cell production
3) Increase in breathing rate
4) Increase in thrombocytes count
Changes occurring are

• (2) and (3)

• (3) and (4)

• (1) and (4)

• (1) and (4)

A renewable exhaustible natural resource is

• coal

• petroleum

• minerals

• minerals

dB is a standard abbreviation used for the quantitative expression of 

• the density of bacteria in a medium

• a particular pollutant

• the dominant Bacillus in a culture

• the dominant Bacillus in a culture

The two gases making highest relative contribution to the green house gases are

• CO₂ and CH₄

• CH₄ and NO₂

• CFCs and N₂O

• CFCs and N₂O