Explain radio-carbon dating.

Explain the carbon cycle in ecosystem?

Explain in brief carbon cycle in ecosystem.

Explain carbon cycle in nature with suitable flow chart.

Explain why carbon differs from rest of the family members.

What is meant by term material cycling? Explain carbon or nitrogen cycle.

Explain, why carbon can reduce copper but not calcium oxide to calcium?

Each question contains STATEMENTS-1 (Assertion) and STATEMENT -2 (Reason). Examine the statements carefully and mark the correct answer according to the instructions given below: STATEMENT-1: The life of radiactive object (organic origin) can found with the help of carbon dating. STATEMENT-2: _(6)^(14)C is a alpha and beta -emitter.

Explain space wave propagation of radio waves.