Environment for Class IV

3. •Plants play many important roles in the
environment. Not only do they provide us
with food and useful products, plants are
important to the balance of nature.

4. •A river is a natural watercourse, usually
freshwater, flowing toward an ocean, a lake,
a sea or another river. In a few cases, a river
simply flows into the ground or dries up
completely before reaching another body of
water.

7. RAINBOW