Are you looking for their name?
They are called chemotrophs; this means that they obtain their energy from chemical reactions.
They are different from phototrops, which obtain their energy from the sun, mostly through the process called photosynthesis.
Let me know if you were looking for something else than a name and if there were options:)
Answer:
Child labour started when population increased. as a result the wants/demands of people are also increasing.so to accomplish the rising wants child labour is rising too.
Explanation:
It is absolutely true that China is seeking to lessen its dependence on coal by developing more hydro power resources. The correct option among all the options given in the question is the first option. China is blessed with natural rivers and it is slowly trying to reduce its dependence on coal powered plants to hydro power plants. This is also a great step towards reducing air pollution.