An organism deriving its nutritional requirements from complex organic substances. *chose hetertroph or autotroph

Explanation:

ii) If the solution is slightly acidic, the universal indicater will give a yellow/orange colour.

iii) carbon dioxide in the atmosphere increases the greenhouse effect.

iv) methane is a green house gas

Its is emitted during the production and transport of coal, natural gas, and oil.

v)Electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric current is passed through them.