The answer is negative controls. These are groups where no phenomenon is probable. They ensure that there is no effect when there should be no effect. Where there are only two possible outcomes, e.g. positive or negative, if the treatment group and the negative control both produce a negative result, it can be concluded that the treatment had no effect. If the negative control group and the treatment group both yield a positive result, it can be inferred that a puzzling variable is involved in the occurrence under study, and the positive results are not only due to the treatment. In other examples, outcomes might be measured as lengths, times, percentages, and so forth.
<span>Both are warm blooded creatures. So you have humerus above and ulna beneath, which partake in the elbow joint. Both the dairy animals and human have pivot sort of joint with two insurance tendons to bolster the joint. The main distinction is that you have 180-degree pivot of humerus in human and not so on account of a dairy animals.</span>
The answer is B solubility in water
I know that It has an amniotic egg so It is either B or C
Breathing, burning something/ fire, or i guess photosynthesis
