cycling of matter

Nitrogen fixation cannot occur through this method:

• lightning

• fertilizer

• nitrifying bacteria

• denitrifying bacteria

The largest reservoir for phosphorous is the:

• atmosphere

• sedimentary rocks

• animals

• plants

A dead tree decomposing would:

• add carbon to the atmosphere

• remove carbon from the atmosphere

A factory burning fossil fuels would:

• add carbon to the atmosphere

• remove carbon from the atmosphere

The rate of carbon dioxide enters the atmosphere because of human activity is much slower than the rate that it is removed.

• True

• False

All ozone is the result of air pollution and its harmful to human health and ecosystem functions.

• True

• False

Ocean ecosystems act as a carbon reservoir removing carbon dioxide, which is dissolved in the seawater. Which biological process would then utilize this dissolved carbon dioxide?

• photosynthesis by oceanic fish

• photosynthesis by phytoplankton

• aerobic respiration by marine mammals

• anaerobic respiration by marine protozoa

Water is lost to the abiotic parts of the biosphere from the biotic parts by the process of:

• infiltration

• precipitation

• transpiration

• photosynthesis

Carbon dioxide in the atmosphere enters the biotic parts of the biosphere through the process of:

• photosynthesis

• burning of forests

• Combustion of fossil fuels

• all of these

Water is stored in reservoirs, sometimes for a long time and sometimes for a short time. Which of the following reservoirs is considered short-term storage?

• glaciers

• oceans

• river

• cloud