Ecosystem is a community or group of living organisms that live in and interact with each other in a specific environment.
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
Answer:
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Answer:
subsistence agriculture
Explanation:
The land is limited, cultivation systems are basic, and there is not enough harvest to sell.
The storage + the transmission of genetic info are NOT done by proteins but by your DNA.
A would be your answer.