Answer:
This is a 50/50 answer. I believe it would be fox, sorry if this is incorrect.
Answer:
B. Is what the scientists manipulate in the experiment.
Explanation:
The Independent variable is not dependent, or doesn't rely, on another variable in the experiment. So, it would make the most sense that they would manipulate the Independent so that they can watch and see how the dependent variable reacts to the manipulation, or the change, in the independent variable.
Answer:
They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick.
Hope this helps!
Its like a system of cells working together to create cells like a molecule or something
