We can obtain this energy directly by eating the plant itself or its products, like carrots, rice or potatoes. Photosynthesis is the first step in the food chain which connects all living things. Every creature on earth depends to some degree on green plants. The oxygen that is released by the process of photosynthesis is an essential exchange for all living things. But every year, over 28 million acres of tropical forest are cut and then burned to clear land for farming.
Chlorophyll absorbs energy from sunlight which a plant uses to make food.
Introductory Activities Design a way that you can make grass grow faster. Mark off two 10 cm x 10 cm boxes of grass and vary the amount of light each square gets. Take a trip to a local greenhouse to observe how they raise plants. Find out how they use light, water or other elements to increase growth and productivity. Discover if plants need soil for photosynthesis.