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Answer:
As I think answer is may be D.
Answer: 40 mm Hg, 95 mm Hg, out of, down
Explanation:
In tissue cells the P(O2) is 40 mm Hg. The blood as it reaches the systemic capillaries around it has a P(O2) of 95 mm Hg. Hence, oxygen diffuses into the cells from the systemic capillaries down the partial pressure gradient. The carbon dioxide diffuses in the same direction at the same time.
Hence, the blanks will be filled with 40 mm Hg, 95 mm Hg, out of, down.
1) The new blood cells are created in the in the bone marrow , located inside the bone .
2) stores fat
3)calcium
4) tough tissue
