Afoodchainisasimplewayofexplaininghoweachlivingthingget...

问题详情：

A food chain is a simple way of explaining how each living thing gets its example,a simple African food chain might consist of three parts:（1）trees and bushes;（2）giraffes;and（3） link in a food chain is food for the next chains always start with plants and end with animals.

Plants are at the bottom of the food ntists call them producers,because they use light energy from the sun to produce food from carbon dioxide and water through photosynthesis（光合作用）als,unlike plants,can’t produce their own ead,they must eat plants or other is why scientists call them consumers.

Consumer animals fall into three ivores eat only plan’ivores eat only other animals. Omnivores eat both plants and addition to producers and consumers,there are also e organisms,such as bacteria and fungi,feed on decaying help the food chain by speeding up the decaying process that releases minerals back into the soil to be absorbed by plants as nutrients.

Most food chains have only four or five links in you go up a food chain,the amount of energy at each level diminishes,because some of the energy is lost in the form of waste or is used up by the organism at the is why it takes many plants,for example,to feed a few giraffes who in turn feed one lion.

Most animals are part of many different food chains,because they must eat more than one type of food to satisfy their energy of these interconnected food chains form a more complex structure called a food ns, for example,are at the center of a very complex food web,because we tend to eat many different types of plants and animals.

h of the following tells us the African food chain?

s,giraffes and lions live on one another.    

ffes eat lions and lions feed on bushes.

s live on giraffes and giraffes eat trees.

es live on lions and lions eat giraffes.

the second paragraph,the author is mainly to         .

asize the importance of the plants            are the plants and the animals

ent the scientists’ different views                ain the producers and consumers

underlined word”diminishes”（in Paragraph 4）probably means         .

ges                  eases               ppears                     eases

would be the best title for this passage?

types of plants and animals                        differences among the living things

e categories of the consumers                  food chain in the natural world

【回答】

CDBD

知识点：科普环保类阅读

题型：阅读理解