How is antigen-antibody binding similar to an enzyme-substrate interaction?

Antibodies and enzymes are made up of the same building blocks, the  common amino acids, arranged in sequences that generate  structures capable of supporting diverse types of interactions with ligands.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.