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Coral Reefs Crossword Puzzle

Teacher: Mrs. Sullivan
Across
A substance some animals produce that can harm or kill other animals.
Variety of living things
Active at night
Of the sea
Down
The development of behaviors or physical characteristics that help a living thing survive.
Of benefit to all parties
Using up the supply of fish
A hard rock-like substance made from skeletons of dead animals
A body of shallow water enclosed by an atoll.
A plant or animal that lives on and harms another plant or animal