Question

the supply of earths fresh water is fixed and is being depleted at a rapid rate. which of the following best describes the effects of a limited freshwater supply on human populations?
a disease transmission will decrease as access to water decreases, leading to improved public health.
b conservation measures will increase per capita water consumption, leading to an improved global economy.
c desalinization facilities will be used to process water stored in glaciers and snow packs, leading to new sources of drinking water.
d world food production will decrease, leading to increased famine.

Explanation:

• Option A: If access to water decreases, it can lead to poor sanitation and hygiene, which are factors in disease transmission. Improved public health is not a direct negative effect of limited freshwater supply.
• Option B: Conservation measures would decrease per capita water consumption, not increase it.
• Option C: Desalination facilities are not typically used to process water stored in glaciers and snow packs. Glacial melt is a natural process, and desalination is for saltwater.
• Option D: Limited freshwater supply can lead to reduced agricultural water availability. Since agriculture is a major source of food production, a decrease in water for farming can lead to lower food production, which may cause famine.

Answer:

D. World food production will decrease, leading to increased famine.