What percentage of the ocean water contains salt?
O 100%
O 97%
o 3%

c) 3%

Explanation:

The best option of these three is 3% since 3.5% of the ocean contains salt. On average salt's concentration is about 35 parts per thousand.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!