Why is smoking a bad habit?

Why is respiration a catabolic process?

Write a note on habitat and habits of cockroach.

What can be achieved/can be prevented? Avoiding smoking and alcoholism.

Different scientists classified the animals. But _________ classified according to the criteria like body size, habits and habitats.

Why is the opening of a dropper very narrow ?

What is nomenclature and why is it important?

Why is it advisable not to talk while eating?