Explanation

Benjamin Franklin invented the lightning rod, a device used to protect buildings from lightning strikes.

He made this invention in 1752 as part of his experiments with electricity.

Explanation

• Robert Watson-Watt: Scottish engineer and inventor.
• Known For: Developing the first practical radar system.
• First Demonstration: 1935

Additional information

• Radar: Stands for Radio Detection and Ranging.
• Function: Uses radio waves to detect and locate objects.
• Importance: Played a crucial role during World War II.

Explanation

During a fever, the increased body temperature can interfere with the normal functioning of the taste buds, leading to a reduced sense of taste or altered taste perception.

This is because taste buds function optimally at a normal body temperature, and fever can disrupt this balance.

Explanation

Seaweed is one of the best sources of iodine, and kelp is the most common type of seaweed harvested for food

Explanation

Petroleum, natural gas & coal are called non-renewable energy sources.

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

Rene Laennec, a French physician, invented the stethoscope in 1816.

He created the first stethoscope using a wooden tube that allowed him to listen to the heart and lungs of a patient without placing his ear on their chest.

Explanation

The main driver of climate change is the greenhouse effect.

Some gases in the Earth's atmosphere act a bit like the glass in a greenhouse, trapping the sun's heat and stopping it from leaking back into space and causing global warming.

Explanation

Tooth enamel is the white, visible part of the tooth and it is also the hardest part of the human body.

 The main mineral composition is hydroxyapatite, a crystalline of calcium phosphate.

Explanation

Astronomy is the study of everything in the universe beyond Earth's atmosphere.

That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars 

Explanation

Vestigial organs are organs, tissues or cells in a body

Which are no more functional the way they were in their ancestral form of the trait.