Fish with stout and strong fins could move on land and go back to water. This was about

Most of the water that falls on the land as rain and snow, sooner or later goes back to a sea or an ocean. Explain how it happens ?

Assertion : About 350 million years or so, reptiles of different shapes and size dominated to earth. Reason : some of land reptiles went back into water to evolve into fish like reptiles probable 200 mya (e.g. Icthyophis).

A hunter desires to shoot a fish whose image could be seen through clear water. His aim should be

The spider and insect move and run about on the surface of water without sinking because

The spider and insect move and run about on the surface of water without sinking because