Answer:
Vestigial structures
Explanation:
Vestigial structuresserve little or no present purpose for an organism. The human tail, which is reduced to the tailbone during development, is one example.
Answer:
Explanation:
It depends on the geography of your environment. I'd recommend using Solar Panels in a hot area, or Windmills/Wind energy in an area with lots of wind. There are other options too, like water/tidal energy for a place in the Caribbean or surrounded by lots of water. Pick one of those.
Blood typing is important in the blood transfusion.
Losing too much blood will result in death. The easiest way to prevent death by loss of blood would be doing a blood transfusion. Blood transfusion is injecting blood from other people to a patient that losing too much blood.
Human has antigen in their blood that can be recognized as a foreign object and get attacked. If you give someone a blood that has similar antigen which he has, the blood will not be recognized as foreign material. But if you do, the antigen in the blood will induce hypersensitivity reaction.
During the course of initiating the scientific method, the hypothesis is considered the first major step. Before that would be identifying a subject and observing a particular issue, animal, etc.
