Which is the world’s largest grass?

The presence of specific features which enable a plant or animal to live in a particular habitat is 

Animals living in water are called 

Red maple is found in .

Animals living in which region hibernate during cold winters?

An example of a plant that live at the bottom of a water body.

Lichens are usually seen in 

Who wrote the book, Silent Spring?

The trees whose leaves change colour in autumn, fall off in winter and grow back again in spring.

Name the organ present in aquatic animals that help them to breathe the dissolved oxygen.