A beaver's front teeth are bright orange because of their super hard enamel coat. These teeth must be sharp because the beaver uses them to cut down trees. Beaver's teeth never wear out because they never stop growing!
Diversity and Productivity
Diversity and Productivity Recent research into the relationship between
biodiversity and ecosystem productivity has shown a pattern of
decreasing productivity as plant diversity decreases. This means
that an ecosystem is more productive if there are a larger number
of diverse species within it. 5 NOVEMBER 1999, P. 1049
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