How would you determine if a bond if polar or nonpolar?

What adaptation is apparent in the bodies of the three tortoise species shown in figure 16-2

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

What is the difference between how ionic and covalent bonds form