Nitrogen Cycle
This gas makes up about 78% of Earth’s atmosphere but cannot be used directly by most living things.
What is Nitrogen
These living organisms are raised in the tank and provide nutrients for plants in an aquaponics system.
What are Fish
This process occurs when liquid water turns into water vapor and rises into the atmosphere.
What is Evaporation
This body of water has a salinity level of around 35 parts per thousand.
What is the Ocean
This process changes atmospheric nitrogen into a form plants can use, often with the help of bacteria or lightning.
What is Nitrogen Fixation
This type of system combines raising fish with growing plants in water.
What is Aquaponics
This process happens when water vapor cools and forms clouds.
What is Condensation
A freshwater habitat known for having lots of water and woody vegetation like trees is called this.
What is a Swamp
These nitrogen compounds are produced during nitrification and are a major form of nitrogen absorbed by plants.
What are Nitrates
This form of Nitrogen is found in fish waste and comes before nitrites and nitrates in the nitrogen cycle.
What is Ammonia
This is water that falls from the atmosphere to Earth as rain, snow, sleet, or hail.
What is Precipitation
This is the measure of dissolved salts in water.
What is Salinity
This nitrogen cycle process changes nitrates in the soil into nitrogen gas.
What is Denitrification
These bacteria convert ammonia from fish waste into nitrates that plants can absorb.
What are Nitrifying Bacteria
This process, usually from precipitation, flows over the surface of the land and into streams, rivers, and oceans.
What is Run-off or Surface Run-off
Ghost forests are caused by this, which is killing Atlantic White Cedar trees.
What is Saltwater Intrusion
Each summer, excess nitrogen carried by the Mississippi River creates this oxygen-poor area in the Gulf of Mexico where most marine life cannot survive.
What is the Gulf of Mexico dead zone
This process allows aquaponics systems to recycle nutrients and reduce the need for synthetic fertilizers.
What is the Nitrogen Cycle
This term describes the release of water vapor from plants into the air.
What is Transpiration
A plant species, like cordgrass, adapted to deal with saltwater environments is called this.
What is a Halophyte