浮游生物-Plankton
2013-12-10 01:06
导读：大学英语作文范文，浮游生物-Plankton应该怎么写，有什么格式要求，科教作文网提供的这篇文章是一个很好的范例：Plankton浮游生物 Scattered through the seas of the world are billions of tons of small p
Plankton浮游生物
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.
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 devours more than one ton of krill daily.
分布在世界海洋的数十亿吨的小型动植物浮游生物要求. 大多数动植物太小,对人类的眼睛看到的. 他们飘流懒洋洋的潮流,提供了许多基本的食物大型动物.
浮游生物被称为草原相当于生长在干地上大陆,是比较恰当的. 粮食潜在价值,远远大于浮游生物的土地种植. 科学家估计,在全世界产生草约49亿吨,每年有价值的碳水化合物、海洋的浮游生物带来超过两倍.
（科教作文网http://zw.ΝsΕAc.com发布） 尽管粮食的潜力巨大,已收到效果,直到最近我们浮游生物农场农场种植的土地. 现在
海洋科学家终于开始研究这种可能性,特别是在海洋资源的机子更重要的,作为世界人口的温饱扩大.
但是没有人认真认为"浮游生物的一块"很快风行全世界. 作为补充食物来源可能耕种,人们的极大兴趣海洋浮游生物科学家.
一类浮游生物,似乎有很大的可能性是很小的收成虾一样东西称南极. 越来越两三英寸长,主要渔获为粮食大蓝鲸,最大的动物都生活在地球上. 实现这一鲸鱼可能增加到100英尺,重150吨,在成熟,这是不奇怪的,每个人的一吨多食海每日.
