The answer is B. The dependent variable is the height of the plant.
Hope this helps,
kwrob
Answer:
how do you do it ?
Explanation:
it looks like you already did it
Answer:
too much phosphorus can slow down the growth of a plant.
Explanation:
Excessive soil phosphorus reduces the plant’s ability to take up required micronutrients, particularly iron and zinc.
Answer:
A. 3/16
Explanation:
The four possible outcomes for Stem length are:
Tt, tT, TT and tt.
The dominant trait (tall stems) will manifest itself in 3 out of 4 outcomes, so its ratio is 3/4.
The four possible outcomes for flower coloration are:
Rr, rR, RR and rr.
The non-dominant trait (white flowers) will manifest itself in 1 out of 4 outcomes, so its ratio is 1/4.
Multiplying both ratios gives us the ratio of offspring that have tall stems and white flowers:

Therefore, the answer is A. 3/16
If the predator that feeds off the dart frogs goes extinct or migrates to a different area then the dart fronts will have a much larger population. This means that the resources the dart frogs rely on will start to deminish and their prey will have smaller numbers