2points
what happens when alleles for a trait are codominant?

see below

Explanation:

    Codominant traits are both visible.  Since both traits are dominant, one trait can't cover up the other one since neither of them are recessive.  

    For example, roan is a codominant coat color in horses and cattle (and probably other species too).  An offspring with roan coat coloring has both red and white colors visible.  Red and white are both dominant traits, and therefore one trait can't cover the other trait, so both are visible.  

Here's an image that might help:  

(Image Found Online, I do not take any credit for this image.  I'd put the link but it won't let me.  If you need to see the link please let me know.  Plagiarism not intended.  If this post interferes with site policy or something, please feel free to take it down.)

I hope this helps!

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

c is the answer to this question. altitude affects the weather because air molecules evaporate.