Explanation

Aqua is a greenish-blue color, often thought of as the shade of water.

Aqua, water in Latin, is a variation of cyan that sits between green and blue in the color wheel.

Aqua means پانی

Water means پانی

Explanation

COVID-19 is caused by a virus, specifically the SARS-CoV-2 virus.

The first infections with SARS-CoV-2 appeared in Wuhan in 2019.

Explanation

When someone receives an “eye transplant,” they are given a donor cornea, the clear front part of the eye.

The corneal transplant requires a functioning retina and optic nerve to restore vision.

ND12_8_2023

Explanation

علم الحشرات، وہ علم جو حشرات کی ساخت سے تعلق رکھتی ہے

Entomology Insects: کیڑے مکوڑے یا حشرات 

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Entomology is the study of insects and their relationship to humans, the environment, and other organisms.

RK12-12-22

Explanation

Ophthalmology is the study of the eye's anatomy, physiology, and diseases.

It is also includes the study of vision disorders and eye surgeries. 

Explanation

Friction can be reduced by changing from sliding to rolling.

Replace sliding friction with rolling element friction.

Such as with the use of rolling element bearings.

Explanation

William Harvey: first known physician to describe completely, and in detail, the systemic circulation and properties of blood. 

William Harvey is also known as father of circulation of blood. 

Explanation

The carbon compound which forms the endoskeleton and exoskeleton of animals is calcium carbonate.

Seashells are the exoskeletons of mollusks such as snails, clams oysters and many others.

Such shells have three distinct layers.

They are composed mostly of calcium carbonate with only a small quantity of protein--no more than 2 percent.

Explanation

• Humidity in the air was measured by a Hygrometer.
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• A hygrometer is an instrument used to measure relative humidity.
• Humidity is the measure of the amount of moisture in the air.
• A psychrometer is an example of a hygrometer.
• hygrometer.
  
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• The humidity in the air tells us about the ratio of Water vapors in the air

Explanation

• Venus, often called the "Evening Star" or "Morning Star," appears in the western sky after sunset.
• Venus is the brightest planet.
• It has an atmosphere but no moons.
• It's identical in size, chemistry and gravity.
• It has volcanoes, mountains and sand.
• It's also called Sister Planet of the Earth.