Lungs are used for breathing air by land animals, and mammals are animals with lungs, and they breath air. Given these facts, what do mammals breathe among the following options: - lung - Air - O2 - Gas - Carbon dioxide - Urea - Heat - Moisture
Air

Healing requires rest, and and, after a full day, relax to a sound and restful sleep in the cool, fresh mountain air. Given these facts, healing requires what kind of sleep among the following options: - disturbed - frustrated - fitful - sound - good - slow - Energy. - energy
sound

Q: Adelta is formed by deposition of sediment at the mouth of a river by water fanning out, and deltas are typical on coastlines with large rivers. Given these facts, rivers will fan out and deposit sediments near what among the following options: - distance - rocks - coastlines - waterfalls - patch reefs - narrow valleys - forests - salinity
A: coastlines

Question: Alight bulb converts electrical energy into light energy when it is turned on, and most of the energy a light bulb uses turns into heat. Given these facts, a light bulb uses what when it converts electrical energy among the following options: - SO2 - O3 - copper - nektar - heat - waves - tube - fibers
Answer: heat

*Question*
Cycles of freezing and thawing water cause ice wedging, and ice wedging is the most important form of mechanical weathering. Given these facts, what can cycles of freezing and thawing water cause this type of weathering among the following options: - flooding - rivers - loose soil - calcite - Sediment - Metling snow - Winter - mechanical
**Answer**
mechanical

Coal is used for generating heat by burning, and dead vegetation settles and becomes peat, a precursor of coal. Given these facts, what becomes something that is burned to generate heat among the following options: - glass - dead vegetation - Fuel cells - preserved vegetation - Electrical energy - hydrogen and oxygen - clouds - electricity
dead vegetation