natural selection and common descent are the 2 ideas Darwin used to explain evolution
I would go for 'c'. The reason being, is that it doesn't do much, and I am also assuming that offshore drilling will not affect underwater sources, which are linked to the ocean.
The atmospheric temperature (varying according to pressure and humidity) below which water droplets begin to condense and dew can form.
A balance of this two process must be maintained in order to attain a constant earth temperature.
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Energy flow in the earth</h3>
The earth in itself is a massive ecosystem. Energy flows into the earth and out of it. The only source of energy input to the earth is the sun. Also, energy is lost from the earth via re-radiation of energy in the form of infrared rays.
However, this inflow and out flow of energy affects the temperature of the earth. A balance of this two process must be maintained in order to attain a constant earth temperature.
Learn more about ecosystem: brainly.com/question/1673533
An example of an ecosystem that benefits people could be the ocean.
The ocean regulates the temperature of the earth, allowing a more comfortable place for people to live.
Hope this helps!
