What is PAN ? What effect is caused by it ?

What is obesity ? What are its causes and how it effects on health?

What is viscosity ? What is the cause of it ?

What are cyclones? Write effects and reasons caused by it.

What are the effects caused by alcohol consumption in endocrine system?

What is Tyndall effect? What is its cause ? Name two phenomena observed in daily life based on Tyndall effect.

What are its causes and effects ?