In the diagram below, what is the property of the wave indicated by the letter a? amplitude crest frequency trough

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

What weather system might be occurring if the pressure gradient decreases and fish harvests in peru are weaker than normal

Why might a geographer choose to present information in a map rather than with stactics or in me asap