Answer:
It reduces loss of water.
Explanation:
The answer is simple as a plant such as cactus are found in deserts and as you know desert is a dry land of sand. So to survive a cactus has an anatomical and behavioural adaptation of absorbing and storing water, and one of them is preventing of loss of water.
It is true that frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen.
<span>maintains a constant INTERNAL environment
so other options included internal variable and external environment. but its internal and environment</span>
The element Carbon is present in the human body
4..........................
