Explanation

Ophthalmologist means a specialist in the branch of medicine concerned with the study and treatment of disorders and diseases of the eye.

Ophthalmologist means ماہر امراض چشم

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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

Explanation

Population density is the number of people living in a unit area of the earth's surface.

It is generally expressed as per square km.

The average density of the population in the whole world is 51 persons per square km.

Explanation

• The Golgi apparatus is a membrane-bound organelle that contains enzymes.
• It is responsible for processing and modifying proteins and lipids synthesized by the endoplasmic reticulum.
• It is a key component of the cellular machinery involved in protein secretion and cell signaling.

Explanation

The ribosome is a complex molecule made of ribosomal RNA molecules and proteins that form a factory for protein synthesis in cells.

Explanation

The blue colour of the sky is due to the scattering of light by the atmospheric particles.

Light of shorter wavelengths scatters more than the light of longer wavelengths and

the violet colour has a shorter wavelength, but our eyes are more sensitive to blue light. Hence, the colour of a clear sky is blue.

Explanation

The presence of lactic acid in milk is due to the fermentation of lactose caused mainly by lactic bacteria

Explanation

Explanation

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

The stratospheric ozone layer is Earth's “sunscreen”  protecting living things from too much ultraviolet radiation from the sun.

Oxygen layer in the atmosphere 

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

Ozone formula: O3

The ozone layer is depleting: Air pollution

ND17-7-2023

Explanation

Antiquity is an ancient artifact or item dating from the middle ages and earlier.

Archaeology is a science that studies the human past through the analysis of material culture.

The study of antiquities is known as Archaeology

ND11-2-2023