Answer:
option d Variations in local temperatures
Explanation:
<em>this </em><em>might </em><em>be </em><em>ur </em><em>answer </em><em>I </em><em>guess </em>
Whereas a change that causes change in chemical composition of a substance is known as chemical change. For example, A new substance is always formed in a chemical change. Thus, we can conclude that the definition a chemical change produces a new substance by breaking and forming new bonds, is correct.
The fish has a single circulation blood passes through the one in each circuit. the fish's heart has two chambers. the first one is the atrium and the second one is the ventricle. the blood entering the heart of the fish goes to the atrium first and then to the ventricle. the ventricle then pumps the blood to the gills.