A graphic that shows the number of organisms in each trophic level of the ecosystem is called a (c) number pyramid. It is in a form of a pyramid and the bottom indicates the largest number of the organisms. It could also be a source of the quantitative analysis of the ecosystem.
If you are conducting a study on the health of people who have been exposed vs not exposed, the method you should use to obtain data would be an observational study because it involves the pre-existing condition of the subjects.
Answer:
Explanation:
tribolite is oldest, and amonite is yongest
(third one) i hope i helped
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