Dealing with matter, how do producers get the nutrients they need?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.