How is it that the open ocean produces the highest net primary productivity of earth's ecosystems, yet net primary productivity per square meter is relatively low? oceans have the largest area of all the ecosystems on earth. ocean ecosystems have less species diversity. oceanic producers are generally much smaller than oceanic consumers. oceans contain greater concentrations of nutrients compared to other ecosystems. oceans receive a lesser amount of solar energy per unit area.

the average story is 10 feet and the car is below ground so it would be negative. i assume the answer would be -20 feet

not completely sure but i think it’s many moons, smaller in size and a ring system.

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.