Why is a thin ozone layer over antarctica of particular concern to scientists?

How do convection currents form underwater mountains?

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

What characteristic of the basin that feeds the congo river system affects movement in central africa? a. the center of the basin is a dense rain forest. b. it is the center of ethnic conflict in the area. c. wildlife on the savanna makes it too dangerous to travel. d. the basin is surrounded by desert.