How 'greed' has ld to over exploitation?

What is common to the following plants: Nepenthes Psilotum, Rauwolfia and Aconitum ? (a) All are ornamental plants. (b) All are phylogenic link species. (c) All are prone to over exploitation. (d) All are exclusively present in the Eastern Himalayas.

Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are the causes for

When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. This phenomenon is referred to as (a) fragmentation (b) alien species invasion (c) over-exploitation (d) co-extinction

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.

Which of the following is not a cause for loss of biodiversity ? (a) Destruction of habitat (b) Invasion of alien species (c) Keeping animals in zoological parks (d) Over-exploitation of natural resources

There are four major causes of accelerated rates of species extinction, which are collectively called as 'the evil quartet'. Which one of the following is not included in 'the evil quartet' ? (a) Over exploitation (b) Pollution (c) Co-extinctions (d) Alien species invasions

Need becomes greed”? What does it refer to?

How light has its effect over the production of melatonin?

Dodo, passenger pigeon and Steller's sea cow became extinct in the last 500 years due to (a) Habitat destruction (b) Over-exploitation (c) Bird-flu virus infection (d) Pollution

Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion. (a) (i) and (ii) (b) (i), (ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii), (iii) and (iv)