Introducing a predator means there will be less prey which will help balance the population of prey. Some predators may run out of food and there might be no prey left for them. If the prey were removed the predator population would decline.
Mosses and ferns are seedless plants. They reproduce via the use of spores. The correct answer is C.
Answer that does not describe the structure of an atom: The electron clod is a small and compacted space around the nucleus.
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