Explanation

Explanation

Casimir Funk discovered Vitamins in the year 1912.

Explanation

The kidneys are part of the urinary tract that makes urine (pee).

Urine has salts, toxins, and water that need to be filtered out of the blood.

After the kidneys make urine, it leaves the body using the rest of the urinary tract as a pathway.

Explanation

Mangrove forests act as barriers against cyclones.

Mangroves reduce erosion by trapping sediments, stabilizing the coastal zone and thus protecting the coast from storm surges and cyclones.

Mangroves in Pakistan are found along the coastline of Sindh and Balochistan.

Explanation

Explanation

Explanation

Calcium is the most abundant mineral in the human body,

calcium makes up 1.5 to 2% of the total body weight.

Approximately 1,200 g of calcium is present in the body of an adult human

more than 99% of that amount is found in bones.

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ND11-12-2022

Explanation

Gamma rays have the shortest wavelength and highest energy in the electromagnetic spectrum.

They are produced in nuclear reactions.

They are used in medical treatments and scientific research.

Explanation

The renewable energy sources are:

• Water energy
• Wind energy
• Tidal energy
• Hydroelectric
• Ocean energy
• Geothermal energy
• Biomass
• Biogas

The non-renewable energy sources are:

• Fossil fuels or Hydrocarbon fuel (Oil, Natural gas, Coal)
• Nuclear energy

Explanation

In the early 1950s, the first successful vaccine was created by US physician Jonas Salk.

Salk tested his experimental killed-virus vaccine on himself and his family in 1953

First used Salk vaccine in 1955 ( in activated)

while 

A live attenuated (weakened) oral polio vaccine developed by Dr. Albert Sabin and first used in 1961.

Israel launched a polio vaccine drive after 1988 in April 2022