### Why is biology divided into the physical and applied branches?

Why is biology divided into the physical and applied branches? In biology, living organisms, including their structure, function, growth, reproduction, classification, origin, and evolution are discussed. Biology also teaches how to use this knowledge to improve human life. To discuss this knowledge in detail, biology has been divided into two branches. one is physical biology in which theoretical concepts are discussed, and the other is applied biology in which the way of using theoretical knowledge is discussed. Actually, for learning and using knowledge easily and effectively, biology is divided into these two parts.

## 👉All Chapter Contents👈

• 5.1 Pressure
• 5.2 Density
• 5.3 Pressure in liquids
• 5.4 Air Pressure
• 5.5 Elasticity
• 5.6 Three States of Matter: Solid, Liquid, and Gas

## 5.1 Pressure

• What is pressure?
• What is the unit of pressure?
• What is the dimension of pressure?
• What do you understand by 1 pascal?
• What is the area?
Mathematical Problems:

## 5.2 Density

• What is density?
• What is volume?
• Uses of density in our daily life.
• What do you understand by the density of water is 1000 kgm-3?
• What do you understand by the density of gold is 19300 kgm-3?
• How can we determine whether the eggs are good or rotten by submerging in water - explain.
Mathematical Problems: