What is extinction?

Why is extinction of species considered to be the most severe aspect in loss of biodiversity?

Which one of the following are at high risk extinction due to habitat destruction?

Assertion : Over-exploitation of a species reduces the size of its population eventually leading to its extinction. Reason : Steller's sea cow is a large, herbivorous, terrestrial mammal which is on the verge of extinction due to over exploitation. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

What is RuBisCO? What is function?

What is mass extinction? Will you encounter one such extinction in the near future. Enumerate the steps to be taken to prevent it.

What is mass extinction? Will you encounter one such extinction in the near future? Enumerate the steps to be taken to prevent it.

Explain the three level of impact of extinction of species.