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Review for Vocabulary Test 1-4, 6, A, B, and PS1 Puzzle 2

Name___________________
Living Environment

Across
Community of living things plus the physical conditions.
Group of ecosystems that have same climate and vegetation.
Different.
Differences.
Cycling of C, H, N and O through an ecosystem.
Organisms that break down and recycle nutrients.
Animal that gets its food by hunting.
To subject to risk.
Physical address of where an organism lives.
Building block.
Down
Study of.
Considerable in importance.
Large in amount.
Total mass of living material.
The disappearance of a species.
To bring down.
Came up with the theory of natural selection.
Following of one thing after another.
Total number of individuals or a species.
To lower.