There are two basic life-cycle patterns among animals. Many animals have complex life cycles with two or more very distinct stages; metamorphosis is the usual term for the often-radical changes that ...
nWhat kind of animal has the most species on Earth? Is it fish? Is it birds? The answer is 'insects.' To date, about 30,000 species of fish, 9,000 species of birds, 5,000 species of mammals, 6,000 ...
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