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

What are some of the problems that hurricanes cause?

Lee is creating a garden with the dimensions shown. he creates paths through the garden along , , and . which correctly compares the lengths of the paths? the path along is longer than the path along , and the path along is longer than the path along . the path along is longer than the path along , and the path along is longer than the path along . the path along is longer than the path along , and the path along is longer than the path along . the path along is longer than the path along , and the path along is longer than the path along .

The european union was formally established in