Explanation

Biogas is a type of natural gas produced through the anaerobic digestion of organic matter.

Such as animal manure and food waste.

It primarily consists of methane and carbon dioxide.

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

Deuterium, (D, or 2H), also called heavy hydrogen.

Deuterium is an isotope of hydrogen.

In the simple hydrogen molecule, 

there is one proton,

one electron,

and no neutrons,protons,electrons,

and neutrons being the elementary particles that make up the atom.).

while 

Deuterium, on the other hand, is composed of one proton, one electron, and one neutron.

ND11-07-2023

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

Helium is used in weather balloons.

Because it is lighter than air and non-flammable.

Explanation

Compressed natural gas (CNG) has the same chemical composition as methane, which is the primary component of Sui gas: 

Chemical formula

The chemical formula for CNG is CH4, which is also the chemical formula for methane. 

Composition

Sui gas is made up of 60–90% methane, 0–20% ethane, 0–20% propane, and 0–20% butane

Explanation

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

Explanation

Most fruits produce a gaseous compound called ethylene that starts the ripening process.

Explanation

The most popular renewable energy sources currently are:

1.      Solar energy

2.      Wind energy

3.      Hydro energy

4.      Tidal energy

5.      Geothermal energy

6.      Biomass energy

RK12-12-2022

Explanation

Nuclear fusion reaction takes place in sun as well as stars.

The process is carried by proton-proton chain.