User: The United States has lost 50 percent of its wetlands since colonial times.

Weegy: ... to wildlife and humans, over 50 percent of wetlands in the lower 48 states have been lost since the colonial ... [ are one of the rarest types of wetlands in the United States ... www.ehow.com/list_5925579_wetland-pollutants.html ]
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User: What is the biggest cause of biodiversity loss in almost every ecosystem, including prairies, forests, wetlands, and estuaries?

Weegy: What is the biggest cause of biodiversity loss in almost every ecosystem including prairies forests wetlands and estuaries? [ http://wiki.answers.com/Q/What_is_the_biggest_cause_of_biodiversity_loss_in_almost_every_ecosystem_including_prairies_forests_wetlands_and_estuaries ]
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