Puzzles and worksheets similar to The Nitrogen Cycle Crossword

The Nitrogen Cycle Crossword

The Nitrogen Cycle Crossword

All organisms need ___________ to build proteins.
The only organisms that can fix atmospheric nitrogen into chemical compouds .
A process in which nitrogen is cycled between the atmosphere, bacteria, and other organisms.
What type of plant does nitrogen-fixing bacteria live on?
What does bacteria use to produce nitrogen-containing compounds such as nitrates?
Where do plants that do not have nitrogen-fixing bacteria in their roots get their nitrogen from?
When animals eat plants or other animals to get nitrogen, that is an example of __________.
In the nitrogen cycle, nitrogen moves between living things and the ______________.
__________ breaks down wastes and return the nitrogen that these wastes contain to the soil.
Nitrogen makes up _______________ percent of the gases in the atmosphere.

Chapter 2: Principles of Ecology Crossword

Chapter 2: Principles of  Ecology Crossword

scientific study of all the interrelationships between organisms and their environment
relatively thin layer of Earth and its atmosphere that supports life
any living factor in an organism's environment
large group of ecosystems that share the same climate and have similar types of communities
any nonliving factor in an organism's environment, such as soil, water temperature,and light availability
group of organisms of the same species that occupy the same geographic place at the same time
biological community and all the nonliving factors that affect it
physical area in which an organism lives
organism that captures energy from sunlight or inorganic substances to produce its own food
exchange of matter through the biosphere involving living organisms, chemical processes, and geological processes
total mass of living matter at each trophic level
heterotroph that preys on other heterotrophs
symbiotic relationship in which one organism benefits and the other organism is neither helped nor harmed
process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere
heterotroph that decomposes organic material and returns the nutrients to soil. air . and water, making the nutrients available to other organisms
simplified model that shows a single path for energy flow through an ecosystem
model that shows many interconnected food chains and pathways in which energy and matter flow through an ecosystem
heterotroph that eats only plants
organism that cannot make its own food and gets its nutrients and energy requirements by feeding on other organisms
anything that takes up space and has mass
symbiotic relationship in which both organisms benefit
role, or position, of an organism in its environment
process in which nitrogen gas is captured and converted into a form plants can use
chemical substance that living organisms obtain from the environmentto carry out li
chemical substance that living organisms obtain from the environment to carry out life processes and sustain life
heterotroph that consumes both plants and animals
symbiotic relationship in which one organism benefits at the expense of another organism

Bio geochemical cycles Crossword

Bio geochemical cycles Crossword

Compound that results from living things and contains carbon
Water in soil or underground
Movement of water between reservoirs
Coal or gas
What nitrogen is needed to make
Makes up 72% of the atmosphere
Conversion of nitrogen to ammonia
Organisms that grow and break down waste
The process of nitrogen turning into ammonia
When Bactria oxidizes ammonia into nitrites

Nitrogen cycyle Crossword

Nitrogen cycyle Crossword

what does most Nitrogen fixation
what is the process of recycling nitrogen through the earth
where is most nitrogen stored in the earth
what does some nitrgoen fixation
what plants to farmers grow to add nitrogen to soil
peas and beans are examples of these
nitrogen-fixing bacteria live in these
nodules grow on these
the process of changing nitrogen from a form we can use to one we cannot use
denitrifying bacteria do this

Nitrogen Cycle Crossword

Nitrogen Cycle Crossword

How do plants get nitrogen?
the process of extra nitrogen getting released into the air
the process of decomposers turning the nitrogen back into ammonium
the process of ammonium getting changed into nitrates by bacteria
Step to make nitrogen useful to plants
What do farmers add to the soil to add more nitrogen into the soil?
How do plants get the nitrogen they need?
What do plants use nitrogen to make?
One way for animals to get nitrogen compounds in their systems is?
What is 78% of the air made of?
We absorb nitrogen in our...
Nitrogen in the atmosphere falls to the earth by......
How much oxygen takes up the atmosphere?
Nitrogen that is used by plants is in the form of....
Where are nitrogen fixing bacteria found

Nitrogen Cycle Crossword

Nitrogen Cycle Crossword


Ecosystems Word Search

Ecosystems Word Search
Word Search

Population Density
Carrying capacity
Limiting factors
Nitrogen fixation
Energy pyramid
Nitrogen cycle
Trophic level
Carbon cycle
Food Chain
Food web

Cycles of Nature, Relationships, Populations Crossword

Cycles of Nature, Relationships, Populations Crossword

the processes by which carbon compounds are interconverted in the environment, involving the use of carbon dioxide y photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.
the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land
the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition
the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure
the process where plants absorb water through the roots and then give off water vapor through pores in their leaves
water released from clouds in the form of rain, freezing rain, sleet, snow, or hail
a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide
The separation of a substance into simpler substances or basic elements
the chemical processes by which atmospheric nitrogen is assimilated into organic compounds, such as Ammonia or Nitrate, especially by certain microorganisms as part of the nitrogen cycle.
the loss or removal of nitrogen or nitrogen compounds commonly by bacteria (as in soil) that usually results in the escape of nitrogen into the air.
excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen
an interaction between organisms or species in which both the species are harmed. Limited supply of at least one resource (such as food, water, and territory) used by both can be a factor.
A relationship between two organisms of unlike species in which one of them acts as predator that captures and feeds on the other organism that serves as the prey
the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other
a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host
a relationship between two organisms where one receives a benefit and the other is not affected by it
the maximum, equilibrium number of organisms of a particular species that can be supported in a given environment
Type of limiting factors of a population such as weather, storms, droughts, etc.
Type of limiting factor of a population that depends on the density and are biotic in nature
a measurement of population per unit area or unit volume
The arrangement or configuration of a population in a given area
When the resources are unlimited in the habitat, the population of an organism may grow in this fashion.
population growth that occurs when the growth rate decreases as the population reaches carrying capacity

Energy Transfer Crossword

Energy Transfer Crossword

Energy from the sun enters an ecosystem when a plant uses sunlight to make sugar molecules
an organism that makes its own food
Gets energy by eating other organism
Consumers that only eat producers
Consumers that only eat other consumers
consumers that eat both plants and animals
Breaks down dead organisms in an ecosystem and returns nutrients to the soil, water, and air
the process of breaking down food to yield energy
a sequence in which energy is transferred from one organism to the next as each organism eats another organism
A diagram that shows the feeding relationships between organisms in an organism
One of the steps in a food chain or food pyramid
A process by which carbon is cycled between the atmosphere, land, water, organism
The only organisms that can fix atmospheric nitrogen into chemical compounds are a a few species of bacteria
the process in which nitrogen circulates among the air, soil, water, plants, animals in an ecosystem
The movement of phosphorus from the environment to organisms and then back to the environment
a gradual process of change and replacement of some or all of the species in an community
the type of succession that occurs on a surface where no ecosystem existed before; such as rocks or sand dunes
the more common type of succession, occurs on a surface where an ecosystem has previously existed
a species the colonizes an uninhabited area and that starts an ecological cycle in which many other species become established
a final, stable community in equilibrium with the environment

Nitrogen Cycle Crossword

Nitrogen Cycle Crossword

What needs to be changed into nitrite (NO2–) and then nitrate (NO3–)?
A group of microbes changes what back into nitrogen gas (N2) or nitrous oxide (N2O)?
Ammonia needs to be changed into what and then nitrate (NO3–)?
Nitrogen gas (N2) must first be changed into ammonia (NH3). A diversity of what have the proteins necessary to do this?
What type of plant has nitrogen-fixing bacteria in root nodules?
What is something bright that changes nitrogen gas into a form useful to plants?
The process of nitrifying bacteria bringing about the oxidation of ammonia (NH3) to nitrites (-NO2) and of nitrites to nitrates (-NO3) is called what?
Meat and eggs are common types of what?
Nitrogen gas (N2) must first be changed into ammonia (NH3). A diversity of bacteria have the proteins necessary to do this. This is called what?
A group of nitrogen-fixing organisms is composed of special bacteria, which live symbiotically in nodules on the what of certain plants?
It can either be synthetic or natural and is important for plants to grow. What is it?
The break down of the tissues of dead plants and animals is called what?