Answer:
Synergistic.
Explanation:
The stimulant might taken to improve the functioning or increasing the effect of any condition. Different drugs are present in market that might work as an stimulant.
The drugs that works as an stimulant increases the effect in presence of some chemicals compounds. The compound that increases this effect is known as synergistic and the effect is known as the synergistic effect. This effect may also mimics naturally as the drug.
Thus, the correct answer is option (C).
I don't think the water cycle has a beginning or ending because all the water in the world is always in various stages of the cycle. It's kind of like asking if a circle has a beginning or ending.
At the very least, I can't think of a specific 'beginning' or 'ending', although I suppose there is an argument to be made that percipitation is the ending and evaporation is the beginning.
The correct option is C.
The geosphere refers to the solid parts of the earth. All of these parts are affected when a volcanic eruption occur. When volcanic eruption occurs, it contributes to the greenhouse effect in the atmosphere because carbon dioxide which is regarded as a greenhouse gas is released into the atmosphere. Also sulphur dioxide gas is released which results in acid rain.