answer:
it took 17,000 years for CO2 to go from 200 to 300 ppm.
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Hey there!
Number 3, "has more people than ever before" is correct. As there are more people, there is a greater need more resources.
Hope this helped, have a good night!
The answer is T, True. Secondary pollutants are pollutants that we do not directly release, but that are created as a side effect of releasing primary pollutants, such as carbon dioxide, sulfur oxides, and particles such as ash and dust. Secondary pollutants include acid rain, ozone, smog, and CFC's (chlorofluorocarbons).
Answer:
This nucleus then acquires <u><em>one </em></u>electron to become electrically neutral.
Explanation:
Fusion :It is nuclear reaction which two or more than smaller nuclei combines together to form heavy nuclear.
A neutron combines with proton in order to make heavy electron that is fusion reaction is taking place.

The overall charge in the nucleus will be +1.And in order to neutralize this positive charge the nucleus will acquire single electron to become electrically neutral.
Answer:
The answer is D. Kidneys absorb more water,volume of water lost from the skin increases and the hairs on the skin lie flat