Which of the following correctly lists the three major locations of freshwater on earth in order, from greatest amount of water to least amount of water?
a. ice caps and glaciers, groundwater, surface water
b. surface water, ice caps and glaciers, groundwater
c. groundwater, surface water, ice caps and glaciers
d. surface water, groundwater, ice caps and glaciers

A. ice caps and glaciers, groundwater, surface water

Explanation:

Fresh water is a type of water, found in nature, in which there is no salt. It is water suitable for consumption (provided it is treated) for humans and animals. Fresh water is also used in agriculture. Only about 2.5% of the water found on our planet is sweet. It is mainly found in polar caps and glaciers, groundwater, surface water.

With the growth of the world population, fresh water has become increasingly scarce. Overuse, waste and water pollution are the main problems related to fresh water today.

As it is a precious and scarce mineral resource, society must be aware that, in order not to run out of water in the near future, it is necessary to avoid waste, use it rationally and do not pollute rivers, lakes and water sources.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.