Aerosols through its direct or indirect effects on plants can cause various problems in agriculture. However, continuous increase in air pollution may represent a threat to agriculture in the future that is persistent and largely irreversible.

Correct Option: B

Aerosols through its direct or indirect effects on plants can cause various problems in agriculture. However, continuous increase in air pollution may represent a threat to agriculture in the future that is persistent and largely irreversible.

60% – 70% SO₂ and 20% – 30% NO₂ contribute to the acid rain.

Correct Option: D

60% – 70% SO₂ and 20% – 30% NO₂ contribute to the acid rain.

Lichens are very good pollution indicators, they do not grow in pollutted areas. They are sensitive to sulphur dioxide pollution.

Correct Option: D

Lichens are very good pollution indicators, they do not grow in pollutted areas. They are sensitive to sulphur dioxide pollution.

CO₂ is a green house gas which traps the solar radiation i.e. heats up the earth’s atmosphere.

Correct Option: B

CO₂ is a green house gas which traps the solar radiation i.e. heats up the earth’s atmosphere.

The ozone (O₂) found in upper part of the atmosphere, i.e., Stratosphere, is Good ozone, since, it acts as a shield for absorbing UV-radiations from sun.

Correct Option: C

The ozone (O₂) found in upper part of the atmosphere, i.e., Stratosphere, is Good ozone, since, it acts as a shield for absorbing UV-radiations from sun.