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Chapter 4.1 What is an Ecosystem?

Across
Get energy from eating dead things
A flat, treeless region whose soil beneath is always frozen
The most common producer
What they call the role or job of an organism in the ecosystem
The process of using the energy from the sun to make food.
A living thing that makes its own food
A natural unit of all the living and nonliving things that interact in one area.
Meat-eater
One of the main decomposers of the tundra
Eat both plants and meat
Down
Living things that get energy from eating other living things
They make it easy for roots to get air and for water to get into the soil
They become scavengers when food is hard to find
One of the main decomposers of the tundra
The tundra is in darkness this many hours in the winter
A common decomposer
Where most tundra occurs
Recycle dead organic matter into nutrients in the soil
Plant-eater