Answer:
My guess would be the fourth option
Explanation:
All living thing have chemical reactions within their body, and ph can affect thous reactions.
Hydrogen will, thus forming water. But there are probably more substances
The answer should be C, It diffuses from the alveoli into the blood.
Alveoli, also called the air sac, is the place where the oxygen we breathed in is exchanged with carbon dioxide that our body produces. Oxygen is passed into the blood in the capillaries through the process of diffusion, while carbon dioxide is diffused from the blood back to the alveoli, so that we can exhale the carbon dioxide after that.
Both a and b are not right because when we breathe in, the oxygen travels from the trachea to the bronchi, to the bronchiole, and to the alveoli, instead of directly into blood vessels like arteries, capillaries, or veins. d is also not right because the direction is wrong.
Therefore, your answer should be C.
The correct answer for this question is C - the best description of a
chemical reaction from the answers offered here is that it consists of
the forming and breaking of bonds between particles. There are not any
atoms destroyed in a chemical reaction, so B and C are incorrect, and
although mixing two substances together (as specified in A) could
produce a chemical reaction, this is not the best way of describing the
actual chemical process.
