Answer:
Controlled group does not receive the treatment. It used as a benchmark to measure how different tested subjects affected the result of the experiment.
For example, the famous experiment of whether plants grow faster with music in one room and without music in the other room. The plant in the no music room is the controlled group.
The bouyant force is the capabilty that an object has of floating. Only things that are less dense than water can float on it.
When you bring water inside the submerged submarine nothing happens since the bouyant force only applies to things that float on the fluid we're taliking about.
Answer:
B.
Hope it helped,
BioTeacher101
I think it I A because it benifits
Answer: the sun powers the whole thing
