Explanation

The two most important factors in the climate of an area are temperature and precipitation.

Explanation

The main reason for adding helium to the breathing mixture is to make the nitrogen-oxygen ratio lower than the air ratio so that the gas mixture can breathe safely in the deep sea. Lower levels of nitrogen are needed to reduce deep gas nitrogen anesthesia and other physiological effects.

Explanation

Elements can be classified as metals, metalloids, and nonmetals.

Explanation

Refrigerators are cooled through the evaporation of a volatile liquid that is,

they use a liquid that evaporates very easily,

and this evaporation creates a cooling effect.

Explanation

Conching is considered an important step for flavor development in chocolate

The conching results in reduces sweetness and an intense increase of harmonious and mellow taste and chocolate note.

Explanation

Carbon Dioxide is heavier than oxygen

so we might expect every CO2 molecule to sink below a layer of oxygen molecules.

"concept"

The Molecular weight and therefore the density (at the same temperature and pressure) of CO2 is only marginally higher than the average density of air.

Explanation

Because they're reluctant to share electrons from their filled outer electron shells, noble gases are generally considered unreactive

Explanation

Hydrogen has 3 Neutrons. 

Explanation

A mature tree absorbs carbon dioxide at a rate of 48 pounds per year.

In one year, an acre of forest can absorb twice the CO2 pgroduced by the average car's annual mileage.

Explanation

The oxidation state of Nitrogen in HNO3 is: +5