Explanation

Radio waves frequency is measured in Hertz.

Hertz (Hz) quantifies the number of cycles per second of a radio wave.

This determining its frequency and position within the electromagnetic spectrum.

Explanation

The Northern Hemisphere is warming faster than the Southern Hemisphere.

Due to more landmass and higher population density.

It leading to increased carbon emissions and heat retention.

Explanation

Each kidney contains around 1 million nephrons.

They are the functional units responsible for filtering blood and producing urine.

Explanation

Bird flu is caused by a type of influenza A virus, often H5N1.

It affects birds and can occasionally infect humans.

Explanation

Vocal cords in females are generally shorter and thinner.

These characteristics contribute to the higher pitch of female voices compared to males.

Males vocal cords are longer and thicker.

Explanation

Copper, gold, and silver are named coinage metals.

Because they have historically been used to mint coins.

Due to their malleability and resistance to corrosion.

Explanation

Bronchitis is a disease related to the respiratory tract.

It is characterized by inflammation of the bronchial tubes.

It leads to coughing and breathing difficulties.

Bronchitis is a condition that develops when the airways in the lungs.

It usually happens because of a virus that irritates the lungs

such as:

• tobacco smoke
• fumes
• dust
• and air pollution

Explanation

Iron is an essential mineral that is crucial for various bodily functions, including the production of hemoglobin.

Hemoglobin is a protein in red blood cells that carries oxygen from the lungs to the rest of the body a

And returns carbon dioxide from the body to the lungs to be exhaled.

Explanation

Chlorine atoms in Chlorofluorocarbons (CFCs) are primarily responsible for the depletion of the ozone layer. 

Explanation

The transfer of thermal energy from one substance to another that requires no physical medium is called radiation.

Radiation is the process by which thermal energy (heat) is transferred through electromagnetic waves, such as infrared radiation. 

They can occur in a vacuum, such as in the transfer of heat from the Sun to the Earth.

Unlike conduction and convection, which require a physical medium (solids, liquids, or gases),