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:
What are primary consumers? Can a food chain have quaternary consumers without having secondary or tertiary consumers?(a) What are primary consumers? (b) Can a food chain have quaternary consumers without having secondary or tertiary consumers? (c) Can a tertiary consumer of one chain ...
secondary consumer 鸟吃虫,虫吃植物,虫是初级消费者 植物是生产者
Packaging isn’t just about what the consumer sees and opens, but how the product is transferred, stored, and placed. This comes together in three parts: primary packaging, secondary packaging, and tertiary packaging. We’ll focus mostly on the first two, as they have a more direct ...
Schoo KL, Aberle N, Malzahn AM, Boersma M (2010) Does the nutrient stoichiometry of primary producers affect the secondary consumer Pleurobrachia pileus? Aquat Ecol 44:233-242Schoo, K. L., N. Aberle, A. M. Malzahn, and M. Boersma. 2010. Does the nutrient stoichiometry of primary pro...
The maximum out-of-pocket is there to protect the consumer, making sure that what the insurance provider is asking them to pay is not too much. Usually, if the premium is high, the out-of-pocket limit is low. What Is Coinsurance?
186K Explore consumer markets. Learn the definition of a consumer market and understand its different characteristics. Discover various consumer market examples. Related to this QuestionBoth the Primary market and the secondary market are different from each other. Briefly explain the difference between...
As a consumer, I often find online clothing shopping experiences a little overwhelming. As such, I really appreciated the simple, accessible approach that Zalando took to its website navigation menu design. Pro tip:A simple, separated menu structure can be a great ...
They use the primary industry products as raw materials and manufacture different products that they deliver to the final consumer or the tertiary industry. The workers in the secondary industry are also known as blue-collar workers. The secondary industry is further divided into the heavy and ...
Secondary Market Research Sometimes called “desk research” (because it can be done from behind a desk), this technique involves research and analysis ofexistingresearch and data; hence the name, “secondary research.” Conducting secondary research may not be so glamorous, but it often makes a...