Exam 30: Earths Diverse Ecosystems

During summer, the Northern Hemisphere tilts_________ the sun because of Earth?s curvature and tilted axis.

A(n)_________ is an area that is very dry because the air in that region has passed over a mountain and lost most of its moisture.

Describe the spatial patterns of light and nutrients in a lake, and explain why these patterns exist.

The Atlantic Ocean gyre moderates the climate of the eastern coast of North America by bringing in warm currents from the equator.

_________are large-scale communities in which the vegetation is determined by long-term patterns of temperature and precipitation.

In the open-water region of freshwater lakes, the_________ zone lacks sufficient light for photosynthetic organisms.