Phase change is the change in state. i.e. water to steam or ice to water
Theres 2 covalent bonds in one water molecule and Plants use capillary action to bring water up the roots and stems to the rest of the plant.
Answer:
One theory had been that hippos were related to pigs. Yet mounting evidence suggested they are closer to whales. A new study concludes that a four-footed semi-aquatic mammal that thrived for some 40 million years was a common ancestor to both whales and hippos.
Explanation:
So that they don't explode.
AKA with a thing called osmosis (transportation of water through cells.)
