A population is a group of organisms of the same kind that live in the same place (3.4 a).
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The populations of species that live in the same place at the same time together make up a community (4.3 a).
All the organisms of the same species that live in the same place at the same time are a population (4.3 a).
Members of a population interact with other populations in a community. They compete to obtain resources, mates, and territory, and they cooperate to meet basic needs (4.3 c).
Many animals benefit from plants. Plants provide food, shelter, and oxygen. These are required to meet basic life needs (2.8 b).
Plants have basic needs, including nutrients, air, water, light, and space to grow (1.4 a).