Answer:
b. The water molecule is polar.
Explanation:
Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.
So abiotic means nonliving, so the only abiotic option is B. the gravel on the bottom of the aquarium.
Answer::::::::::::::::::::C
