Plants get their food from the sun light that is given off by the sun and the green leaves on the plants can absorb the sun light, the Carbon Dioxide and water.
Air consists of a mixture of gases that widen from the earth's surface to outer space. The earth's gravity holds the air in place around the earth. The gases of the air move about freely among one another. As sunlight passes through the earth's atmosphere, it strikes molecules of the gases. The molecules scatter the sunlight, which is a mixture of all colours, in every direction. The principal gases of the air are nitrogen and oxygen. Other gases include argon, water vapour, carbon dioxide, neon, helium, krypton, hydrogen, xenon, and ozone. The water vapour in the air is water in the form of an invisible gas. Nitrogen makes up about 78 per cent of dry air--that is, air from which all water vapour has been removed. Oxygen accounts for about 21 per cent of dry air
Photosynthesis is a food-making process that occurs in green plants. It is the chief function of leaves. The word photosynthesis means putting together with light. Green plants use energy from light to combine carbon dioxide and water to make sugar and other chemical compounds. All our food comes from this important energy-converting activity of green plants. Light energy is converted to chemical energy and is stored in the food made by green plants. Carbon dioxide is necessary for photosynthesis.
Example Essays Home
