Water molecules have covalent bonds. Each molecule consists of two hydrogen and oxygen covalent bonds. However, when water molecules are placed together, as they are normally, the hydrogen atoms in each molecule can form hydrogen bonds with the oxygen atom of other molecules.
Answer:
you want us to answer ALL those questions , cause that's alot lol but its okay if so .....
The most concentrated source of stored energy is a molecule of "GLUCOSE"
Autotroph..make their own energy. ..heterotroph get energy from other organisms
