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Some male birds and mammals congregate in communal courting grounds called leks.
Rapid population growth of geese has resulted in extensive areas of La Perouse Bay becoming d
The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.
A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet
Population Indicators
As the world’s population continues to grow, demands on limited resources for food production