What are the limiting factors of ecosystem

Q1. Explain the plant life, animal life, and geology of the ecosystem in the area in which you live. What populations and communities are there? How dependent is your community on this ecosystem? What are the limiting factors of ecosystem?

Q2. Adult lampreys attach onto large fish and feed frequently on their body fluids. Given this continuous supply of food, which one of the most likely missing in lampreys?

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