Answer the following:
Why bacterial nucleus is said to be underdeveloped?

Why bacterial nucleus is said to be primitive?

Answer the following question: When is the nucleus said to be unstable?

Answer the following : Why was the name black hole given ?

Answer the following: Why is the camel called the ship of the desert?

Answer the following Why are the new hybrid varieties of chicken developed by crossing Indian varieties with exotic varieties?

Answer the following questions: When is a body said to be at rest ?

Answer the following questions : When air is said to be unsaturated with water vapour?

Answer the following Why the classification of garbage is essential?

Answer the following questions: When is a body said to be in motion ?

Answer the following questions : When is air said to be saturated with water vapour ?