You've been growing numerous plants in a greenhouse in dishes called flats. different flats have different number of plant species in them (ranging from 1, 2, 4, and 8). you've grown these plants for 6 weeks and finally examining them.

suppose you changed this lab's experimental design. which of the following changes would probably not change the results?

a. substituting slow-growing lettuces for rutabaga and mustard.
b. letting the plants grow for twice as long, so some of the "fast-starters" slow down growth and "slow-starters" speed up.
c. restricting water and/or nutrients, instead of supplying ample quantities of both.
d. adding leaf-eating caterpillars that prefer rutabaga.
e. moving the trays farther apart in the greenhouse, so the edges don't touch one another.