food chain
A food chain is an idea developed by a scientist named Charles Elton in 1927. He described the way plants get energy from sunlight, plant-eating animals get their energy from eating plants, and meat-eating animals get their energy from eating other animals. The idea of a chain means that all these animals are linked together, so anything that affects one link in the chain affects everything in the chain. ]The key concept that we need to learn from food chains, food webs and food pyramids is the transfer of energy. For all life on earth there is only one available source of energy, the sun. Furthermore, only plants can change this energy into a form that can be used by animals. All plants rely either directly or indirectly on plants for their energy. Plants feed upon sunlight. Only plants have the ability to convert sunlight into food that they and animals can use. Feeding levels are also called trophic levels. The word "trophic" is a Greek word for nourishment. To determine the trophic level, we count the number of energy transfers. Green plants are at the first trophic, or nourishment, level because there has been one transfer of energy, from the sun to the plants. The first link in the chain, the plant, is called the produ
. . .
Some common words found in the essay are:
Charles Elton, food chain, organic matter, , grazing food, trophic levels, grazing food chain, detritus food chain, amounts organic matter, rabbits eat, amounts organic, energy consuming, link chain, food chains, detritus food, carbon dioxide water, rabbits eat grass,
Approximate Word count = 1427
Approximate Pages = 6 (250 words per page double spaced)
|
 |
