D. Size of the oxygen atom compared to the hydrogen atom
Answer:
answer is b: oxidation reaction
I'm not completely sure, but I'd say D.
Well think about it during that time it is freezing cold the water cycle comes up from a sea and makes clouds that will be no effect to it but what happens when you put water in a freezer its cold so the result is its gonna hail
Answer: Respiratory gases(Oxygen)
Explanation:
The essential role of cadio vascular system is to supply blood; containig metabolites (glucose,amino acid, fatty acid and glycerol) and gases expecially Oxygen,needed for combustion of these nutrients(metabolites) in mitochondrial of cells (cellular Respiration) to generate ATPs for biochemical activities of the body.