Question

please tell fast it's argent please don't post irreverent answer​​

Answer 1

Answer:

1) Oxygen (O2): medical use, welding

Nitrogen (N2): fire suppression, provides an inert atmosphere

Helium (He): balloons, medical equipment 

Argon (Ar): welding, provides an inert atmosphere for materials

Carbon dioxide (CO2): carbonated soft drinks

Acetylene (C2H2): welding 

Propane (C3H8): fuel for heat, gas grills

Butane (C4H10): fuel for lighters and torches

Nitrous oxide (N2O): propellant for whipped topping, anesthesia 

Freon (various chlorofluorocarbons): coolant for air conditioners, refrigerators, freezers

2) They are necessary to the lives of people, plants, animals, and all other organisms. Nutrients help break down food to give organisms energy. They are used in every process of an organism's body. Some of the processes are growth (building cells), repair (healing a wound), and maintaining life (breathing)

3) Plants in snowy regions have needle like leaves to conserve water by decreasing the surface area of the leaves. Also, the have cone shaped canopy so that snow does not cover the stomata on the leaves by settling on it.