Explanation

Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.

Explanation

After nine years of efforts, Pakistan was successful in framing a constitution.

The Constituent Assembly adopted it on 29 February 1956

it was enforced on 23 March 1956 proclaiming Pakistan to be an Islamic republic.

This constituent consists of:

234 Articles divided into 13 parts and 6 schedules.

23rd March became our Republic day

In 1957 Pakistan officially renamed the Islamic Republic of Pakistan

Explanation

Passed In National Assembly: May 24th, 2018

In Senate: May 25th, 2018

In Provincial Assembly of Khyber Pakhtunkhwa: May 27th, 2018

Assented to May 31st, 2018

Explanation

•  On 3 December 1967, the world's first human-to-human heart transplant was performed by Dr. Christiaan Barnard
• at Groote Schuur Hospital in Cape Town, South Africa.
  
• Barnard performed a heart transplant on his patient, Louis Washkansky.
•  Louis Washkansky, 53, with heart failure the donor, Denise Darvall, was just 25.

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ND3-12-2022

Explanation

Trachoma is a disease of the eye

It is caused by infection with the bacterium Chlamydia trachomatis.

It is a public health problem in 38 countries and is responsible for the blindness or visual impairment of about 1.9 million people

Explanation

The First Amendment to the Constitution of Pakistan, enacted on May 4, 1974, redefined Pakistan's boundaries and eliminated references to East Pakistan.

The amendment also redefined Pakistan's federal and naval treaties.

The First Amendment was introduced during the tenure of Zulfikar Ali Bhutto to protect against internal and external destabilization.

Explanation

The Ninth Amendment to the Constitution of Pakistan would have imposed sharia law as the supreme law.

The Senate passed the bill and sent it to the National Assembly on 7 August 1986. 

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

The War in Darfur is also known as the Land Cruiser War.

It was began in February 2003 in the Darfur region of western Sudan.

The conflict centered on unresolved issues in the region.

Explanation

• The speed of sound is maximum in solids.
• Because the particles are closely packed, allowing for efficient transmission of vibrations.