<span>I believe it is light, but this is kind of a confusing question. Technically there is a independent and dependent variable in the question. The variable being manipulated is light, and the earthwork activity depends on the light. </span>
Draw a punnet square:
R. r.
R. RR. Rr
r. Rr. rr
Any combo that results in an R results in red flowers.
3/4 offspring have red flowers.
The correct option is A, FEEDING HABIT AND MIGRATION. From the passage given above, it can be seen that seagulls are scavengers, they usually eat from garbage dumps while wild geese eat seeds and insects, thus they differ in feeding habit. In term of migration, seagulls does not follow seasonal pattern of annual migration while wild geese do. These are the contrasts between the two birds.
you are correct, it would be D. i hope this helps you out!
Inert
That means it does not react with other atoms
