What is ozone hole?

Give four examples of plants cultivated in commercial agroforestry.

Expand CCS. (or) What is CCS?

Methane is one of a potent green house gas. Point out a few sources from where methane is generated.

What is Dobson unit?

What is ozone layer? Why it is essential?

Where did Montreal Protocol was held? State its objectives.

Name the plant species which act as indicators for Nitrate pollution & Fluoride pollution.

Write the uses of silvopasture systems.

Explain the term social forestry.

What is invasive species?

Distinguish between In-situ conservation and Ex-situ conservation.

Give the names of any four famous sacred groves in Tamil Nadu.

Name any two endemic trees of Peninsular India.

Carbon sequestration occurs naturally by plants and oceans. Name any four microalgal species involved in the process.