Word Warriors - Quiz # 3

The continuous process by which nitrogen is exchanged between organisms and the environment.

• nitrogen cycle
• water cycle
• carbon cycle
• atmospheric cycle

The process of burning.

• succession
• nitrogen cycle
• combustion
• carbon cycle

A species that is first to establish itself in an area where nothing is growing-or in an area that has been devastated by fire,flood, plowing etc.

• succession
• combustion
• species succession
• pioneer species

The process in living organisms of taking in oxygen from the surroundings and giving out carbon dioxide.

• oxygen gathering
• respiration
• photosynthesis
• biodiversity

The gradual replacement of one type of ecological community by another in the same area, involving a series of orderly changes.

• pioneer species
• photosynthesis
• succession
• combustion

The circulation of carbon between living organisms and their surroundings.  This can happen through the processes of digestion, respiration, and even decay.

• carbon cycle
• nitrogen cycle
• water cycle
• hydrologic cycle

The number, variety, and genetic variation of different organisms found within a specified geographic region.

• biodiversity
• nitrogen fixation
• succession diverstiy
• decomposition

The process of breaking down organic material, such as dead plant or animal tissue, into smaller molecules that are available for use by the organisms of an ecosystem.

• decomposition
• respiration
• nitrogen cycle
• combustion

The conversion of atmospheric nitrogen into nitrogen compounds by certain bacteria.

• nitrogen cycle
• nitrogen fixation
• carbon respiration
• hydrologic cycle

The complex process by which carbon dioxide, water, and energy from the sun are used by green plants to make food (using chlorophyll).

• decomposition
• respiration
• nitrogen fixation
• photosynthesis