This can be identified as a population. In a population, the organisms are the same species and they have to live in the same area. For example, the population of cities are the head count of the species of human in that one area.
Answer:
Every ecosystem is made up of a variety of living and nonliving things. The living things within an ecosystem depend on each other to obtain their energy.
Explanation:
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"The density of a substance determines how much light is refracted"
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Fish nets can be very detrimental towards the ecosystem, as they can trap unintended wildlife, which can horribly tilt the ecosystem one way or another.