Answer:
Surface water <---> river
Ground water <------> well
Water vapour <------> atmosphere
Glacier <-------> ice
Explanation:
Between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.
Yes it is, He gives you a good education to prepare you for life
Explanation:
A.They filter waste and extra water from blood so they can create urine, which is removed from the body.