Eutrophication is caused by an increase of nitrates and phosphates that come mainly from what source? А. Agriculture
B. Residential areas
C. Industry
D. Landfills

Which is an example of a population?

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates

How do the evolutionary chart and the video support the claim that all living things are made up of cells?