Use the correct form of adjectives

It’s (wonder) to walk in the forest after the rain.

I prefer (sand) beaches.

The air is rather (pollute) in large cities.

(Harm) gases make the air we breathe is very polluted.

The problem of air pollution is (nation) problem.

(Colour) rainbow appeared after the rain.

Our country is (fame) for its pure nature.

People destroy (nature) habitat of many rare animals.

Water pollution is (danger) for many species of fish.

Humans should be (care) with nature.