Exam 55: Ecosystems and the Biosphere

MATCHING Match the component of the nitrogen cycle with its description. a.assimilation c.nitrification b.denitrification d.nitrogen fixation -Rhizobium carries out this process

MATCHING Match the component of the nitrogen cycle with its description. a.assimilation c.nitrification b.denitrification d.nitrogen fixation -converts nitrate to gaseous nitrogen

Since 1750, the main cause of increased carbon dioxide being released into the atmosphere is:

Which statement is false?

The two most important factors that determine an area's climate are:

Nitrogen fixation is the process by which gaseous nitrogen is converted to nitrate. ____________________

About __________ of the total energy the sun releases strikes the atmosphere.

Arrange the following from the ecosystem with the smallest average NPP to the ecosystems with the largest NPP. 1) Lake 2) Savanna 3) Estuary 4) Tropical rain forest 5) Open ocean

A primary source of carbon for photosynthetic organisms is:

The enzyme nitrogenase is rather unique, as it specifically functions:

Nitrogen is a critical requirement for living organisms, because it is a component of:

Effects of deforestation illustrated by the Hubbard Brooks Experimental Forest include all of the following except:

MATCHING Match the component of the nitrogen cycle with its description. a.assimilation c.nitrification b.denitrification d.nitrogen fixation -this process occurs in heterocysts

During the cycling of phosphorus, phosphorus does not enter __________ in appreciable amounts.

Solar radiation:

Transpiration occurs in:

Which of the following processes is not involved in the hydrologic cycle?

Which of the following terms is synonymous with photosynthetic organisms?

A rain shadow occurs in the dry lands on the sides of mountains facing the prevailing winds. ____________________

MATCHING Match the component of the nitrogen cycle with its description. a.assimilation c.nitrification b.denitrification d.nitrogen fixation -converts NH₃ to NO₃^-