A secondary source is anything written after the fact
Polar molecules (with +/- charges) are attracted to water molecules and are hydrophilic. Nonpolar molecules are repelled by water and do not dissolve in water; are hydrophobic.
A carrier is a child who carries the genes of from parents but the gene doesn't show itself because of being masked by the dominant gene.
Hii! I believe the answer is D. The brown beetles were better able to survive to reproductive age and pass on their traits. (:
