Generally speaking, most aldol condensation reactions involve a negative enolate attacking a slightly positive carbon of the carbonyl group on another compound to form a(n):

a. Secondary amine.
b. Carboxilic acid.
c. Ester.
d. β-hydroxy carbonyl compound.

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?