Mass will increase as… a.number of particles increases
b.gravity decreases
c.Number of particles decreases
d.gravity increases

a) number of particles increases

Explanation:

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Tan mice lived in regions with sandy hills. Over time, many of these tan mice migrated to a region with dark-colored hills. Eventually, the mice developed certain mutations in the trait for hair color, which made them black. The following three statements can be made about the mice:

1. The mutations for black hair will be inherited through natural selection.

2. The population of tan mice will increase in the dark-colored hills over time.

3. Black mice will have a better chance of successfully reaching reproductive age.