Explanation

A fluorescent lamp consists of a glass tube filled with a mixture of argon and mercury vapour.

Explanation

Lipids are an umbrella term for Triglycerides, Phospholipids and Sterol.

Explanation

Eugenics is the practice or advocacy of improving the human species by selectively mating people with specific desirable hereditary traits

Explanation

A bell works with the principle of working of electromagnetism.

Explanation

Earth is the fifth-largest planet in the solar system. Its diameter is about 8,000 miles. And Earth is the third-closest planet to the sun

Explanation

Explanation

The first digital camera was invented by Steven Sasson, an engineer at Eastman Kodak, in 1975.

Sasson's camera used a monochrome Fairchild CCD image sensor.

It was the first self-contained electronic camera.

Explanation

Coagulation and filtration is one of the most common water treatment techniques used by larger water systems, used for removing particulates and turbidity from surface water.

Explanation

Answer:

B

There are two ways to freeze and store sperm: dry ice and alcohol (100 degrees Fahrenheit) and liquid nitrogen (320 degrees Fahrenheit). Liquid nitrogen is preferred because there is no evidence that fertility declines with age. Sperm stored in dry ice alcohol will gradually reduce their chances of giving birth.

Explanation

Chloroplasts are found in all higher plants. It is oval or biconvex, found within the mesophyll of the plant cell.

The size of the chloroplast usually varies between 4-6 µm in diameter and 1-3 µm in thickness.