Explanation

The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second.

A universal constant is known in equations as "c," or light speed.

The speed of light in air is 2.9 × 10⁸ m/s.

Explanation

Saturn

Saturn is the second largest planet in our solar system.

Titan is the name of the largest moon of Saturn

Ringed Planet is nicked name for Saturn

Explanation

Lead (Pb) is not essential for plants.

It does not play any known role in plant growth or metabolism.

In fact, it can be toxic to plants when present in significant amounts.

Explanation

Birds that feed on marine food use rectal salt glands to remove excess salt from their bodies. 

These glands allow them to excrete salt while retaining water.

They enabling survival in a saline environment.

Explanation

Onyx, Carrara, and Calacatta are all forms of marble.

• Onyx is a type of marble that is characterized by its banded or striped pattern, typically in shades of black, white, and gray.
• Carrara marble is a type of white or blue-gray marble that is quarried in Italy and is known for its high quality and durability.
• Calacatta marble is a type of white marble that is also quarried in Italy.

Explanation

Rayon is a semi-synthetic fiber made from cellulose, derived from wood pulp or other plant materials, but it undergoes extensive chemical processing.

Explanation

Interferon is a type of protein produced by the body's immune system in response to viruses.

It helps activate immune cells and inhibit viral replication.

It playing a key role in antiviral defenses.

Explanation

• High levels of cholesterol can lead to the buildup of plaques in the arteries.
• It causing atherosclerosis, which is a primary factor in heart attacks.

Explanation

Electric engines are considered the most efficient.

Because they convert more energy from the battery into usable power compared to internal combustion engines like petrol and diesel.

It is lose a significant amount of energy as heat.

Explanation

An average-sized horse can live to be between 25 and 30 years old.

Smaller horse breeds tend to live slightly longer, closer to 40 years.

On the other hand, larger horses live shorter lives, closer to 20 years.