They come from the atmosphere, since plants use carbon dioxide to produce carbohydrates :)
<span>Tides and currents carry nutrients, moderate temperatures, and influence conditions in numerous ecosystems. The relationship between society and tides and currents is obvious as coastal cities built to withstand prescribed levels of tidal surge are now being impacted by record breaking tidal surges, and the building of solid coastal structures do not allow waves to dissipate energy on land but deflect their energy to other coastal areas along the shore.
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Answer:
precipitation, condensation, evaporation, soemthing else, water, clouds, surface ruunoff, etc
Explanation:
hope it helped on science
The area of study is called political science
