Normally grasshoppers do little harm (损害). But when there are lots of them, their bodies and behaviors will change. As locusts, they travel in huge groups, eating all the plants in an area and moving on. In a single day, a small group of locusts can eat as much food as 35,000 ...
解析 C。解析:在草原生态系统中,以草为食的蝗虫是初级消费者(primary consumers)。草是生产者,蝗虫吃生产者,所以是初级消费者。选项A生产者是能够自己制造食物的生物,蝗虫不能。选项B二级消费者是以初级消费者为食的生物,蝗虫不是。选项D分解者是分解生物遗体等的生物,蝗虫不是。
Locusts are grasshoppers(蚂蚱). Normally grasshoppers do little harm. But when there are lots of them, their bodies and behaviors will change. As locusts, they travel in huge groups, eating all the plants in an area and moving on. In a single day, a small swarm of locusts can eat as ...
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B Locusts are grasshoppers(蚂蚱).Normally grasshoppers do little harm. But when there are lots of them,their bodies and behavior change. As locusts, they travel in huge groups, eating all the plants in an area and moving on. In a single day, a small swarm of locusts can eat as much ...
Normally grasshoppers don't travel in groups so they do little harm. But when there are lots of them, their bodies and behavior change. That’s when they become locusts. Locusts travel in huge groups, laying eggs along the way, which produces even more locusts. In a single day, a small...
Answer to: Hydras, earthworms, grasshoppers, and humans are classified in the same ___. (a) genus (b) species (c) phylum (d) kingdom. By...
and its inhabitants are like grasshoppers;who stretches out the heavens like a curtain, and spreads them like a tent to live in; who brings princes to naught, and makes the rulers of the earth as nothing. Wake up to where you are, and who is with you . . . And now, God himself...
A growing number of people are beginning to eat insects such as beetles, bees and grasshoppers. They can be fried, boiled with soup, or mixed with dessert. 1._ B Let's look at some of them.Insects are rich in protein, vitamins(维生素) and minerals(矿物质), so they are also ...