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.

What is nomenclature and why is it important?

Why is food cooked ?

Do you consider passive smoking is more dangerous than active smoking,Why?