鸟是primary consumer 还是secondary consumer在作食物网,同级内可以互相吃么?比如,鸟吃昆虫,所以鸟是primary consumer,但是昆虫是吃草的,所以它不能算producer,那也算是primary consumer了,那鸟还是primary consumer? or secondary consumer? 相关知识点:
secondary consumer 鸟吃虫,虫吃植物,虫是初级消费者 植物是生产者
secondary consumers C. decomposers D. other primary consumers 相关知识点: 试题来源: 解析 A。解析:在生态系统中,初级消费者(primary consumers)主要依赖生产者(producers),因为初级消费者是以植物(生产者)为食的。选项B次级消费者以初级消费者为食;选项C分解者与初级消费者没有这种依赖关系;选项D初级消费者不...
a secondary consumer C. a tertiary consumer D. a producer 相关知识点: 试题来源: 解析 C。解析:在海洋生态系统中,鲨鱼处于较高的营养级。鲨鱼会捕食一些次级消费者,如一些小型食肉鱼类等,所以鲨鱼是三级消费者。它不是初级消费者,初级消费者如一些浮游动物是以浮游植物为食的。也不是二级消费者,二级消费...
A. the secondary consumer itself B. the primary consumer C. the producer D. the sun 相关知识点: 试题来源: 解析 D。解析:当次级消费者吃初级消费者时,它获得的能量最初来自太阳。因为生产者通过光合作用从太阳获取能量,初级消费者吃生产者获取能量,次级消费者再吃初级消费者获取能量。反馈...
Primary Mortgage Market vs. Secondary Mortgage Market The primary market is made up of primary lenders. Primary lenders typically keep the loans they originate as part of their portfolio and service them for the life of the loan. However, the bank that made the mortgage loan can sell the loan...
This is especially true in consumer electronics, where storage conversations typically revolve around an individual computer’s use of primary memory like RAM vs. secondary storage devices like HDDs and SSDs. On the scale of a computing device, volatile RAM may be considered the primary storage ...
C。解析:次级消费者(secondary consumers)的功能包括吃初级消费者(Eating primary consumers)、控制初级消费者的数量(Controlling the population of primary consumers)以及在食物链中向上传递能量(Transferring energy up the food chain),但是产生氧气(Producing oxygen)是生产者(如植物)的功能,不是次级消费者的功能。反...
athe chemcial industry converts these raw materials into primary ,secondary and teriary products, a distinction based on the remoteness of the product from the consumer,the primary being remotest. 化工业转换这些原材料成主要,次要和teriary产品,根据产品的遥远的分别从消费者,主要是最遥远的。[translate...
In a hypothetical food chain consisting of: grass, grasshoppers, sparrows and hawks, the grasshoppers are the Select one: a. primary producers. b. primary consumer. c. secondary consumer. d. tertiary consumer. A consumer can also be con...