Answer: Option B
Explanation:
Usually in scientific experiments, at least one parameter is checked; here, the growth rate of wheat in two different conditions is being evaluated.
Hence, growth rate of wheat alone in pans A, B and C becomes the standard or referential control against which the experimental control (Wheat + clover) in pans D, E and F is evaluated, since both treatments are exposed to the same external conditions.
I hope this helps
First one is axis, second one is light and energy (I think), medium sized star, I don't know the forth one, sorry, 1,300,000 times bigger than the earth, I don't know the sixth one, and 9940.73° F.
We live in the troposphere, which is where we get our air from
For most turtles the incubation ranges from 45 and 75 days.
Temperature, viscosity, and amount of dissolved gases
