no. there are several reasons
1. there is natural process of human make up,which if disrupts causes many disabilities. like mutation, as science has achieve many but can not engineer a perfect solution.
2. DNA have a certain pattern which if changed could made a human a liability. like getting genes from a sheep and engineered it in a lion which posses other traits. such causes an imbalance in the ecosystem and disrupting the biome. Loin behaving like sheep and sheep behaving like loin.
Clouds affect the amount of solar energy by blocking some of the light that reaches earth.
A control group is sort of the normal group. The group you aren't changing or messing with. It is to show what the species/experiment acts like on its own in response to something without you having to change it at all.
With an experimental group, you are changing something about the subject before putting it in the conditions it will need to respond to.
I don't entirely understand, but I know the control group is constant, unchanging. It sort of helps with distinguishing things. I have examples of experiments if that will help you understand what a control group is to answer the question. I also have a The Death Cure example if you have seen or read the book. I hope you do not fail this assignment, but even if I did not answer with an answer you were looking for, it could have helped you answer the question on your own.
I saw somewhere a similar question, though I was given the answer choices. If this is the answer you are looking for: variable(s).
Control groups don't use variables because you aren't changing them.
Air pressure (inside the lungs) is lowest when lung volume is highest, so the answer is B. when you breathe in your lungs expand, which makes the air molecules spread out, therefore the pressure is lower.
Not all mixtures are solutions. It has to be a special homogeneous bond mixture composted of two or more substances
