What type of bond forms between water molecules?
a) ionic bonds
b) hydrogen bonds
c) covalent bonds
d) valence bonds

The correct answer is C) Covalent bonds.

Explanation:

Water presents covalent polar bonds between oxygen and two hydrogens. This makes the molecule really strongly attached. Also the molecule presents a polarization where oxygen has two negative charges and each hydrogen has one positive charge so it's partially polarized but still the net charge is 0.

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.