Which of the following plants has become a water weed in this country?

What can be the consequence of the loss of wildlife?

Which species has become extinct due to overexploitation by humans?

The number of wildlife is continuously decreasing. What is the main reason for this?

What is an endangered species? Give an example of an endangered plant and animal species each.

Of the four major causes for the loss of biodiversity (Alien species invasion,habitat loss and fragmentation,over-exploitation,and co-extinctions),which according to you is the major cause for the loss of biodiversity? Give reasons in support.