In some flowers there are two alleles for a color, and these can both be expressed equally at the same time. which best describes this trait

Two traits are equally expresses when the traits are codominant.  In codomimance, neither trait is dominant nor recessive.  In some flowers, for example, different colors are codominant, and combining the two produces an entirely different color (red x white leads to pink offspring).

rising sea temps which are causing coral reefs to bleach and die out

glaciers are melting causing sea levels to rise wgich could flood out land

explanation:

the answer is

c. parental