Explanation

The epicenter of an earthquake is the point on the earth's surface vertically above the focus. Maximum damage is caused at the epicenter.

زلزلے کا مرکز زمین کی سطح پر عمودی طور پر اوپر کی حیثیت سے ایک نقطہ ہے۔ زیادہ تر نقصان زلزلے کے مرکز پر ہوتا ہے۔

Explanation

Mangrove swamps serve all the following function

1.       Erosion protection for the coastline,

2.       Prevention of Typhoid and hurricane damage,

3.       Entrapment of sediment washed off land,

4.       Nursery for many aquatic organisms,

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Explanation

Xylem is one of the two types of transport tissue in vascular plants, the other being phloem.

The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.

Explanation

300 grams is the weight of the heart of an adult human being.

The average gross weight of the heart was  for men 289.6 g

The average gross weight of the heart was  for women 284.7 

At the age of 61-70 years, the average weight of men was 345.9

At the age of 61-70 years, the average weight of women was 285.1

*****ٓAdditional Informations*****

A human brain weight is 1400 grams.

Explanation

Gases can dissolve in water. The dissolving of a gas in water depends on the interaction between the molecules of the gas and the water molecules.

Oxygen, Carbon dioxide, and Nitrogen are mostly soluble gases in water.

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Explanation

Cumulonimbus is a dense, towering vertical cloud, typically forming from water vapor condensing in the lower troposphere.

Explanation

·         The path of traffic noise can be locked by constructing vertical barriers along the highways.

·         Proper highway planning and design are essential for controlling traffic noise.

·         Establishing lower speed limits for highways also reduced the noise.

Explanation

Radiant energy is the energy of electromagnetic waves. It is a form of energy that can travel through space. 

For example, we receive the heat from the sun, which is located very far from the earth via radiation. The sun's heat is not transmitted through any solid medium, but through a vacuum. They are short waves.

Explanation

Chemical reactions that take place inside living things are called biochemical reactions. 

An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process.

Explanation

Sociology is the study of groups and group interactions, societies and social interactions, from small and personal groups to very large groups.