2. Which freshwater source do you think is most important to people? Why?

Groundwater

Explanation:

Groundwater, which is in aquifers below the surface of the Earth, is one of the Nation's most important natural resources. Groundwater is the source of about 33% of the water that county and city water departments supply to households and businesses (public supply).

According to reaserche Freshwater can be found on river and lakes it's very important. These water form are important because Freshwater is vital for life, supporting ecosystems and human civilizations. We use freshwater in many aspects of daily life including food production, power generation, manufacturing, and sanitation. ... Access to freshwater will be a defining issue for future generations.

because the light is a great source of energy for the plants to survive. (i hope this )

i think that you are smart and you should fit for it out