Explanation

• Eugenics is a controversial and outdated field of study that aimed to improve the human race by selectively breeding individuals with desired traits and characteristics.
• It involved the study of heredity and the manipulation of genetic components to alter human traits, often with the goal of creating a perceived "superior" race or population.

Explanation

• Nuclear energy is a method of harnessing the energy released from the splitting of atomic nuclei (a process called nuclear fission) to generate electricity.
• The main purpose of nuclear energy is to provide a clean and reliable alternative source of energy, reducing dependence on fossil fuels and mitigating climate change.

Explanation

• Hematology is a subspecialty of pathology that specifically deals with diseases related to blood and blood-forming organs.
• Hematologists diagnose and treat blood disorders such as anemia, bleeding disorders, and blood cancers like leukemia.

Explanation

• The Equator is an imaginary line that runs east-west around the middle of the Earth, dividing it into the Northern Hemisphere and the Southern Hemisphere.
• It is located at 0° latitude (0° N or 0° S).

Explanation

Nitrogen (N2) is the most abundant gas in the Earth's atmosphere

They make up about 78% of the atmosphere's composition.

Oxygen (O2) is the second most abundant gas

Explanation

• In the periodic table, a columns is considered to be a groups (also known as a family or column).
• Groups are the vertical columns of elements in the periodic table.

Explanation

• The rotation of the Earth on its axis causes day and night.
• As different parts of the planet face towards or away from the Sun.

Explanation

• Gases can be converted into liquids by cooling, a process known as condensation.
• As the temperature decreases, the particles of the gas slow down and come together, forming a liquid.

Explanation

 Hematite is an ore of iron

It is one of the most abundant minerals on Earth's surface.

It is a common rock-forming mineral

That is found at locations throughout the world in:

• sedimentary rocks
• metamorphic rocks
• igneous rocks 

Explanation

Hepatitis B virus causes this inflammation

Hepatitis is an inflammation of the liver

Usually, it is caused by infections or side effects of medicines.

It is sometimes called “yellow jaundice”

Because liver injury from hepatitis may cause an increase in bilirubin.