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Oakland Zoo Food-webs

Across
If a species of plant or animal lives in an ecosystem due to nature, and not because humans introduced it there, it is called a _________ species.
An organism that uses energy from sunlight to produce food.
If the ___________ that eats an organism is removed from the ecosystem, that organism's population will likely increase.
Two of the same type of organism, which can reproduce together, belong to the same ________.
The maximum number of organisms that an environment can support (2 words).
An organism that gets energy by breaking down the bodies of dead plants and animals.
The name for all the living and nonliving things in an area.
Down
The arrows in a food chain or food web represent the flow or transfer of _________.
The effect or change that something has on other things.
All the living organisms in an ecosystem.
The space, conditions, and living and nonliving things surrounding an organism.
When humans introduce a new plant or animal into an ecosystem, it is an _________ species.
The number of organisms in an ecosystem that belong to the same species.
Another word for bad or negative effects.