Field experiments demonstrate that variation in soil fertility influences terrestrial primary production. however, we cannot say that nutrients exert primary control. that role is still attributed to temperature and moisture. why do ecologists still attribute the main control of terrestrial primary production to temperature and moisture? consider the difference in primary production between arctic tundra and tropical forest and the extent to which nutrient additions changed primary production in tundra. 4

mercury

explanation:

mercury is the least dense because of its size

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.

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