Why are nutrients from fertilizer harmful to aquatic ecosystems?
they cause in increase in fish population
the increase in algae population reduces oxygen in the water
they can infect plants, which causes animals and humans to become sick
fish and other organisms grow too large and can no longer live in the ecosystem

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

When analyzing tree rings, what do scientists assume a thin ring indicates?

Variety of living organisms; includes genetic, species, and ecological types.