Water Cycle
Condensation
The largest reservoir of carbon can be found where?
21%
______________ takes place in the absence of oxygen
Denitrification
This greenhouse gas reduces earth's ability to cool itself off.
Carbon dioxide
The water cycle is the _____________________.
Continual process of water changing and moving
Plants obtain their carbon by __________.
Absorbing the carbon to make their food through the process of photosynthesis.
The ____________ is the largest reservoir for oxygen.
Lithosphere
This is how nitrogen enters the food chain
Nitrogen assimilation
_______ is emitted during the production and transport of coal, natural gas, and oil.
Methane
Rain, snow, sleet, and hail are all forms of __________.
Precipitation
Respiration
This is where the phosphorus cycle begins
Earth's crust
This is the step of the nitrogen cycle when atmospheric nitrogen is converted into the usable form ammonia
Nitrogen fixation
_________________ is emitted during agricultural, land use, and industrial activities. Also during the treatment of wastewater.
Nitrous oxide
Which step of the water cycle indicates that water is staying the same?
Condensation
Carbon enters the food chain by___________.
Oxygen cycle
During nitrification________________.
Ammonia is converted into nitrate (by presence of bacteria in the soil)
Carbon dioxide enters the atmosphere through_________________?
Burning fossil fuels, solid waste, trees, biological materials, and certain chemical reactions
The evaporation of water from plant leaves is called _______.
Transpiration
______________ help carbon return to the atmosphere. Hint this is a very slow process.
Industrial activities
The phosphorus cycle passes through which of Earth's spheres?
Lithosphere, hydrosphere, and biosphere
Ammonification
Which greenhouse gas is the result from livestock and other agricultural practices, land use, and by the decay of organic waste.
Methane