If we chew the grains like wheat, jowar, rice we feel sweet. Why ?

Why do we get rains?

Why don't we drink sea water

Why we should not talk while eating ?

Can you give some more examples from daily life where we can feel the effect of evaporation ?

When we go on a busy road in the evening a lot of smoke is spread in the surroundings. We get cough and feel uneasy even when we close the nose with napkins. Why this type of symptoms we observe? Think about it. If these symptoms will continue, what happens?

We can break the layers of graphite easily - Why ?

After a vigorous excercise or work we feel pain muscles. What is the relationship between pain and respiration?

After a vigorous exercise or work we feel pain In muscles. What is the relationship between pain and respiration