The maintenance of a constant internal environment is called ________.

Catabolism means _______.

_______ are of different size  and shape.

______ do not have a life cycle.

An example of a unicellular organism ?

______ is  the process of which complex food substances are broken down to simpler substances with the release of energy.

All green plants without exception have chlorophyll.

An example of a senstive plant.

There are three kinds of things in the world ?

An example of a homeothermic animal.