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4.2 puzzle

Across
When one animal captures & feeds on another animal.
When animals chase off the predators.
Causes dramatic changes in the structure of an animal.
"living together"
Describes where & how an organism lives.
When an organism lives on a mammal & feeds on their blood & skin.
Down
Refers to any necessity of life.
The ability to survive and reproduce.
Relationship in which one organism benefits other is harmed
The general place where an organism lives.
When an animal feeds on producers.