Ageing is the word that describes all that change as the organism evolve and it also includes growth !
This type of water transition or change in phase of matter is known as FREEZING.
Water has molecules that are free flowing and have the ability to collide and bounce against each other, that's why it has that kind of characteristic that it takes the shape of its container.
When these molecules are exposed to lower or colder temperatures, the molecules tend to vibrate and get attracted towards each other, creating a semi-solid or completely solid material. In this example, liquid turned into frost because of the low temperature present within the environment.
Biological fitness or darwinian fitness there the same thing
That would be integumentary system
Answer:
Small cells have a smaller surface to volume ratio than longer
