It was used till the 1960s. Hope i helped.
Answer:
Insulin and glucagon
Explanation:
Insulin and glucagon are hormones that help regulate the levels of blood glucose, or sugar, in your body.
Answer:
H. It represents the actual size but it is big enough for the eye to see making it extrememly accurate
Explanation:
Answer:
in an athlete that os blood doping there wooed be more oxygen absorbed-by the read blood cells and will get less
