Why is Hydra said to be virtually immortal?

A molecule is said to be chiral

Can a body be said to be at rest as well as in motion at the same time?

Two types of lamps are given below. Filament lamp. Why is it said that the use of filament lamp must be controlled ?

Hook's law is said to be the fundamental law in elasticity. Name the different types of modulus of elasticity with their equations.

If the length of two pieces of rope are said to be in the ratio 3: 5 , what all Interpretations like this can you make?

Why are lichens said to be pioneer plants?

Whatever be the life span, death of every individual organism is a certainty, i.e., no individual is immortal, except