a usable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state.

oceans rivers glaciers freshwater lakes groundwater

A usable water can be defined as the water that can be used for the purpose of drinking or can be used for agricultural purposes. The water that can be used is the freshwater.

Saline water is unusable as it has higher level of salts in it, which makes it unsuitable for the drinking purpose and agricultural purpose.

Oceans :unusable

Rivers :usable

Glaciers :usable

Freshwater: usable

Lakes :usable

Groundwater :usable

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.