All living organisms need food to survive. Plants make their own food in their leaves. Plants are eaten by animals. These animals then become food for other animals, creating a food chain.

Singly, or in association with other cells, they make up the bodies of all living things. Every cell is surrounded by a membrane or a living covering. Within the membrane is the protoplasm.

All living things depend on millions of chemical reactions that happen constantly. Chemical reactions that keep you alive happen fast! When you eat food, breathe, play, and grow, all of these are ...

All living organisms need food to survive. Plants make their own ... focus the pupils’ attention on specific groups of living things before engaging in classifying and sorting tasks.