Explanation

The composition of dry air is:

1. Nitrogen (N2) - approximately 78.08% by volume
2. Oxygen (O2) - approximately 20.95% (21%) by volume
3. Argon (Ar) - approximately 0.93% by volume
4. Carbon Dioxide (CO2) - approximately 0.04% by volume (varies with location and time)

Explanation

The stratospheric ozone layer is Earth's “sunscreen”  protecting living things from too much ultraviolet radiation from the sun.

Oxygen layer in the atmosphere

Ozone protects us from the harmful ultraviolet radiation of the sun.

Ozone formula: O3

The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.

The ozone layer is depleting: Air pollution

ND17-7-2023

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Explanation

Wind is the moving air in the Earth's atmosphere.

Kinetic energy is the energy possessed by moving particles

therefore wind possesses kinetic energy.

Additional Information:

The horizontal movement of air is known as winds.

Chemical energy is energy stored in the bonds of atoms and molecules

Explanation

Answer:

C

Forests and trees contribute significantly to food security by helping maintain the environmental conditions required for agricultural production. They stabilize the soil, prevent erosion, increase the water storage capacity of the soil, and reduce air temperature and soil temperature.

Explanation

Energy has been around since the dawn of time.

The first source of energy was the sun, as it provided heat and light during the day.

Energy generation in stars is due to nuclear fusion.

Explanation

• Marine water is water that contains a high amount of salt, typically above 30% salinity.
• This includes oceans, seas, and other saltwater bodies.

Explanation

• Biotic components refer to the living things in an environment.
• Including plants, animals, microorganisms, and fungi.

Explanation

• Freshwater is water that contains a very low amount of salt, typically less than 1% salinity.
• Examples of freshwater sources include rivers, lakes, streams, and underground aquifers.

Explanation

Carbon monoxide (CO) is a colorless, odorless, and highly toxic gas that is emitted by the incomplete combustion of fossil fuels, such as gasoline, natural gas, and wood.

Explanation

Seasonal contrasts are maximum in mid latitude.