When two or more substances are mixed together but not chemically combined what is the resulting combination called?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

(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.