darwin found the bones of the ground sloth and what he thought was an anciet capybara in south america. he asked around, but nobody in south america has ever seen either of thise animals alive. what had happen to them?

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

the answer is d. chordata

what's the question ?

b.