The research method is called SECONDARY ANALYSIS.
Secondary analysis involves using the data that other researchers have made available or that which the government has made available to conduct research. This method id usually used because gathering such data originally is usually impracticable.
That which exists, a being, a creature, an entity.
Answer:
23.oxygen diffuses through alveoli walls to the blood capillaries
24.blood capillaries surround alveoli
25. pumps blood which carry all the body minerals all over the body from the lungs and to all body parts
I'd say false because they only work above 25 degrees celsius and below 40 degrees celsius. Certain enzymes only work at certain pH too.