Answer: The cause can be something that causes the problem and the effect is what effected it. If something caused the population to go down the effect would be death rate or birth rate.
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Answer:
northwest
Explanation:
the largest plate, the Pacific Plate is moving north west relative to the plate that holds North America. i also did this recently<3
Adaptations can give an organism a competitive edge but adaptations are not always used for completion against other species