How many legs do insects have?

How does a fish breath through?

Where do the siberian cranes nest in?

Birds, reptiles and mammals breathe with the help of:

How does an adult frog breath through on land?

What helps the frog to swim?

Which one of the following have strong muscles and a flexible backbone?

A baby frog or a tadpole breathe through its:

Birds like the purple moorhen and the pelican are local migratory birds of:

How do penguins use their forelimbs as?