The centre of the nucleus is an atom
B) the decay of once-living things
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Answer:
a,the ability to go from a single cell to multicellular organism
Answer: 160 mm HgTherefore, the partial pressure of oxygen is: PO2 = (760 mm Hg) (0.21) = 160 mm Hg, while for carbon dioxide: PCO2 = (760 mm Hg) (0.0004) = 0.3 mm Hg.
Explanation:
Stress<span>A nonspecific response of the body to any demand put upon it that can be both physical and mental</span>
