All insects live inside a hard skeleton (true or false)?

All arthropods have a rigid exoskeleton, and legs that are jointed (arthropod means "jointed foot"). In order to grow, arthropods have to shed their whole exoskeleton all at once; this is called "molting." All insects have bodies which are divided into three sections: the head, thorax, and abdomen.

They have more resistances against possible life ending threats so they are able to reproduce safely to increase food supply.