Answer:
C. Chain Reaction
Explanation:
You get different elements from just one by a single reaction.
D. A sour liquid that forms gas bubblee when mixed with copper
The water cycle deals with wind. The wind uses up energy as well as the water cycle.
Answer:
Universal indicator is a mixture of many different indicators which gives different colours at different pH values of the entire pH scale. It is used to obtain an idea of how acidic or basic a substance is.