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organisms depend on other organisms for food, shelter, protection, and reproduction. These are the living things.
A population of squirrels and all the populations they interact with make up a _____________.
The number of individual organisms that occupy a definite area is called population ______________.
If the amount of food in an area can support only a certain number of deer in a population, the amount of food is called a ____________________.
A relationship that benefits one organism without affecting the other is called ____________________.
Plants are ________________. they capture and use energy from the Sun and use it to produce carbohydrates
Animals are _____________. they obtain energy when they feed on producers or other animals.
Mushrooms are _____________; they obtain energy as they break down the remains of organisms.
The levels of organization from thelowest level to the highest:
1. organism 2. population 3. community 4.ecosystem 5. biome 6. biosphere
Groups of populations that interact with each other in a given area form a ______________.
The struggle among organisms to obtain resources for reproduction and survival is called __________________.
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