Explanation

Materials that block the flow of electrons are called insulators.

They have high resistance and prevent electrical current from flowing through them.

Such as rubber or glass.

Explanation

Energy is measured in units of kilocalories

One kilocalorie  is equal to 4.18 kilojoules.

The amount of energy a food contains per gram is known as its energy density,

So we can describe fat as more energy-dense than protein or carbohydrate.

Explanation

Geologists are scientists who study a planet's solid features, like soil, rocks, and minerals.

Explanation

Omer-Khayam was born in Iran in 1048 AD.

Omer-Khayam was a poet, Mathematician & Astronomer. 

Omer-Khayam introduced modern Solar Hijri calendar, the Jalali calendar.

Omer-Khayam  was the first to develop the binomial theorem and determine binomial coefficients.

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Explanation

John McCarthy is recognized as the father of Artificial Intelligence due to his astounding contribution in the field of Computer Science.

John McCarthy was an American computer scientist

Note: Artificial Intelligence is a branch of Computer science, which aims to create intelligent machines so that machine can think intelligently in the same manner as a human does.

Explanation

Explanation

Due to biomagnification, DDT (Dichlorodiphenyltrichloroethane) accumulates more in organisms higher up the food chain. 

Seagulls, being top predators, experience the highest deposition of DDT.

Explanation

The atmospheric pressure at any place is measured by a Barometer

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The barometer was invented by Evangelista in 1644.

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Explanation

Electric field intensity is defined as force per unit charge (N/C) or potential difference per unit distance (V/m).

So, V/m is an equivalent.

It is commonly used unit for electric field intensity.

Explanation