The _[blank]_ is the zone where no sunlight penetrates the water.

biotic zone

sunlight zone

aphotic zone

intertidal zone

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?