Explanation

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

while

Zoology is the study of all animals.

Biology is a natural science concerned with the study of life and living organisms.

Etymology investigates and documents the lives.

Explanation

Ecology is the study of interrelationships between organisms and with their environment.

It is also known as environmental science.

It's a branch of biology that examines how living things interact with their physical surroundings.

Explanation

Detailed Answer

One light year is equal to the distance that light travels in one year

(it is about ten trillion kilometers or six trillion miles).

A light year is a unit of distance.

The distance light travels in one year is known as light year.

A light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometers (9.46 x 1012 km) or 5.88 trillion miles (5.88 x 1012 mi)

Explanation

Bauxite is the most important ore of aluminum which contains only 30–54% alumina.

The rest is a mixture of silica, various iron oxides,

and titanium dioxide along with trace amounts of zinc, phosphorous, nickel, vanadium etc.

Explanation

The pH of pure water (H20) is 7 at 25 °C

pH stands for "Potential Hydrogen"

Explanation

1 g of fat provides 37 kJ of energy on oxidation while

1 g of carbohydrate on oxidation gives 17 kJ of energy.

Hence, fat has the highest calorific value.

Explanation

Direct current is produced when electrons flow constantly in one direction.

It's abbreviated as "DC".

Since direct current flows in one direction only, its electrical pressure or voltage is always oriented in one direction, or "polarity".

Explanation

About WWF

Full form: World Wide Fund for Nature

Logo: Panda

Panda as WWF symbol of: Nature & Wildlife

Established: April, 1961

Headquarters: Gland, Switzerland

Explanation

salt (NaCl), sodium chloride, a mineral substance of great importance to human and animal health, as well as to industry. 

Formula: NaCl

Molar mass: 58.44 g/mol

Melting point: 801 °C

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ND30-12-2022

ND5-07-2023

Explanation

The ozone layer protects living things from too much ultraviolet  from entering the atomsphere

Oxygen layer in the atmosphere

Ozone protects us from the harmful ultraviolet radiation of the sun.

Ozone formula: O3

The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.

The ozone layer is depleting: Air pollution