During body temperature regulation, temperature receptors in the skin communicate information to the brain (the control center) which signals the effectors: blood vessels and sweat glands in the skin.
Semen is the correct answer
A bad line measurement (aka control) is set up so that you can compare your results from each test against so it gives the values a meaning as it shows how they differ from eachother
Meiosis is used to to make sex cells.
Mitosis is used to make regular cells for you body.
No, because there is only so much food for them to eat.
The same applies for all levels of the food chain.
