Answer:
double compared to single
The youngest would be the ones at the top and the oldest would be at the bottom. the oldest is B and the ones around it, as they get bigger get younger. hope this helps :)
Well, if a students wants to determine the effects of fertilizer on corn growth, they could set up a experiment.
There would be two groups of corn each exposed to the same conditions. The only difference is that one of the groups is given fertilizer. The other isn’t, meaning that it is the control group.
