Explanation

About 97% of the Earth's water is contained in the oceans, which is saltwater.

The remaining 3% is freshwater, but most of it is frozen in glaciers and polar ice caps.

Only about 0.3% of the Earth's water is freshwater that is readily available for human consumption, agriculture, and other uses.

Explanation

Non-renewable energy sources:

• Oil
  
• Nuclear energy
• Petroleum
• Natural gas & coal

Renewable sources of energy:

• Solar energy
• Wind energy
• Hydroelectric power
• Biomass energy
• Geothermal energy
• Tidal energy

Explanation

Honey has natural antibacterial properties and low moisture, preventing spoilage.

Archaeologists have found edible honey in ancient Egyptian tombs, thousands of years old.

Explanation

Vitamin-B Complex is found in a wide variety of foods including leafy greens, seeds, fruits, and seafood.

It helps in energy production and supports brain and nerve function.

Explanation

Galvanized iron sheets have a coating of zinc. 

Galvanization is a process where a layer of zinc is applied to iron or steel to protect it from rusting, making "galvanized iron" essentially iron coated with zinc

Explanation

Explanation

• Hemodialysis is a medical procedure that filters and cleans the blood using a machine when the kidneys fail to perform this function effectively.
• It removes waste, toxins, and excess fluids from the bloodstream.

Explanation

“Origin of Species” is a work of scientific literature by Charles Darwin 

It was published on 24 November 1859,

The book is considered to be the foundation of evolutionary biology.

ND5-5-2023

Explanation

A light year is the distance light travels in one year — about 9.46 trillion kilometers.

It is commonly used to measure vast distances between stars and galaxies.

Astronomers use an effect called parallax to measure distances to nearby stars.

Parallax is the apparent displacement of an object because of a change in the observer's point of view.

Explanation

All weather patterns are mainly caused by heating from the Sun.

It drives the movement of air and water in the atmosphere, influencing temperature, precipitation, and wind patterns.