The answer is caffeine. Caffeine
is used as a stimulant to maintain alertness and reduce drowsiness. Caffeine
is used to improve performance and most take it to allow them to continue
working when they naturally feel tired or
to stimulate the brain in the morning. It is consumed
in beverages such as tea, coffee, and soft drinks.
You need to put the answer choices because there is a lot that makes natural selection occur. but without the answer choices i would say a fertile female and made of reproductive age.
Answer: He didn’t grow a plant without fertilizer.
Explanation: Manu has nothing to compare his plant to. Meaning, he cannot prove that fertilizers help plants grow. He needs to grow a plant with and without fertilizer.
B.
Asbestos was used in housing for many years because it was cheap to manufacture and was amazingly heat-resistant, but was found to be incredibly dangerous, causing innumerous accounts of lung cancer and related problems.
This is from memory, but I will double check after I answer.
The gland that is most likely causing the problem is the parathyroid gland
