小编为考生整理了托福 写作范文《Oil Refining 炼油》，供考生们参考。
托福写作范文Plankton
Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye to see. They drift about lazily with the currents, providing a basic food for many larger animals.
Plankton has been described as the equivalent of the grasses that grow on the dry land continents, and the comparison is an appropriate one. In potential food value, however, plankton far outweighs that of the land grasses. One scientist has estimated that while grasses of the world produce about 49 billion tons of valuable carbohydrates each year, the sea”s plankton generates more than twice as much.
Despite its enormous food potential, little effect was made until recently to farm plankton as we farm grasses on land. Now marine scientists have at last begun to study this possibility, especially as the sea”s resources loom even more important as a means of feeding an expanding world population.
<a hrEf=hTtps://Www.EUZw.nEt/miniform.html>提分快的苏州初中作文阅读培训</a>
No one yet has seriously suggested that “plankton-burgers” may soon become popular around the world. As a possible farmed supplementary food source, however, plankton is gaining considerable interest among marine scientists.
One type of plankton that seems to have great harvest possibilities is a tiny shrimp-like creature called krill. Growing to two or three inches long, krill provides the major food for the great blue whale, the largest animal to ever inhabit the Earth. Realizing that this whale may grow to 100 feet and weigh 150 tons at maturity, it is not surprising that each one.
以上就是小编为大家整理的托福写作范文之炼油的详细内容，希望对大家复习托福写作有所帮助。
《托福写作范文Plankton》添加时间：2024-12-14；更新时间：2025-03-09
