Type
Crossword
Description

What is 78% of the air made of? Nitrogen
What do plants use nitrogen to make? Protein
One way for animals to get nitrogen compounds in their systems is? Consumption
How do plants get the nitrogen they need? Soil
What do farmers add to the soil to add more nitorgen into the soil? Fertilizer
Step to make nitrogen useful to plants Fixation
the process of ammonium getting changed into nitrates by bacteria Nitrification
How plants get nitrogen Assimilation
the process of decomposers turning the nitrogen back into ammonium ammonificaction
the process of extra nitrogen getting released into the air Denitrification

Nitrogen Cycle Crossword Puzzle

Type
Crossword
Description

step to make nitrogen useful to plants nitrogen fixation
What do farmers add to the soil to make it more rich in nitrogen fertilizer
the process by which nitrates are converted to nitrogen gas denitrification
plants use nitrogen to make ___________ protein
the process of ammonium getting changed into nitrates by bacteria nitrification
how plants get nitrogen assimilation
the part of the plant that absorbs nutrients from the soil roots
bacteria that convert ammonia to nitrites and nitrites to nitrates nitrifying bacteria
the process by which the protein in faeces, dead plants or animals is converted to ammonia ammonification
organisms such as bacteria and fungi decomposers

Nitrogen Cycle Word Search

Type
Word Search
Description

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no2
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78 percent
oxygen
feces
excretion
death
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plants
nitrogen fixing bacteria
fish
herbivores
carnivores
nitrification
assimilation
birds
nitrogen fixation
decay
denitrification
ammonification
soil nitrates
nitrogen cycle

Biogeochemical Cycles Crossword

Type
Crossword
Description

Our atmosphere contains 78% free _________________________. Nitrogen
Animals need nitrogen to produce ______________________. Proteins
What molecule is produced when nitrogen is fixed? Ammonia
Animals get nitrogen into their systems by eating _______________. Plants
Large organic molecule containing nitrogen that contains your genetic information. DNA
Prokaryote responsible for "fixing" nitrogen. Bacteria
_________________________ occurs when fertilizer runoff causes excess algae and water weeds. Eutrophication
Process where water "evaporates" from plants. Transpiration
What "powers" the water cycle? Sun
Rain, snow, sleet, or hail. Precipitation
The downward entry of water into the soil or rock surface. Infiltration
Process by which water changes from a liquid to a gas. Evaporation
Oats, peas, beans, corn Legumes
Helps plants to grow. Fertilizer
Bacteria that break down organic matter. Decomposers
Process by which water vapor turns into liquid water. Condensation

Nutrient cycles Crossword

Type
Crossword
Description

how many stages are there in the nitrogen cycle? FOUR
what can be used to increase nitrate levels in soil? fertilisers
How are nitrate ions absorbed by the plant? active transport
what is produced by dentrification? Nitrogen
what type of reaction is the conversion of ammonium ions to nitrate ions? Oxidation
which micro-organisms release ammonia? saprobiotic
What type of relationship exists between host plants and mycorrhizae bacteria? mutualistic
How are phosphates transferred from plants to animals? consumption
what process can occur due to overuse of fertilisers? eutrophication
where are nitrogen fixing bacteria found in legumes? root nodules

Abiotic Cycles Project Crossword

Type
Crossword
Description

What is the biological oxidation of ammonia or ammonium to nitrite followed by oxidation of nitrite to nitrate? nitrification
What is the removal or loss of nitrogen or nitrogen compounds? denitrification
What is the chemical process which atmospheric nitrogen is assimilated into organic compounds? nitrogen fixation
What is the decomposition with production of ammonia or ammonium of bacteria on nitrogenous organic matter? Ammonification
What is the process in which plants and other organisms use sunlight to synthesize foods from carbon dioxide and water? Photosynthesis
What is the process in living organisms involving the intake of oxygen and the release of carbon dioxide? Respiration
What is the rapid chemical combustion of a substance with oxygen, involving the production of heat and light? Combustion
Rain, snow,and sleet Percipitation
Liquid to vapour Evaporation
Moisture from plants creating vapour Transpiration
What is the water draining from a surface, land, or building called? Runoff
The conversion of a vapor or gas to liquid? Condensation

Nitrogen Cycle Crossword

Type
Crossword
Description

The only organisms that can fix atmospheric nitrogen into chemical compounds Nitrogenfixingbacteria
Makes up 78 percent of the gases in the atmosphere Nitrogen
Nodules that live on the roots of plants Legumes
They are essential to the nitrogen cycle; breakdown wastes, such as urine, dung, leaves, and other decaying plants and animals decomposers
Some of the nitrogen that cycles from the atmosphere and living this is released to the soil with the help of Bacteria
Nitrogen in the air Atmospheric nitrogen
nitrogen-fixing bacteria in soil and roots of nodules produce ammonia
Other bacteria convert ammonia into; plants can use nitrates
The process by which bacteria changes fixed nitrogen back to gaseous nitrogen, which is then released back into the enviroment. denitrifying
The layers of gases that surround the earth; the air Atmosphere

Phosphorus and Nitrogen Cycles Crossword

Type
Crossword
Description

What percent of the atmosphere does Nitrogen make up? 78
What process involves splitting nitrogen apart into a form that plants can utilize? Nitrogen Fixation
What form of nitrogen is used by plants? ammonium
What is the only biological enzyme that can break Nitrogens triple bond? Nitrogenase
What type of bacteria takes ammonia and can convert it into nitrates and nitrites? Nitrifying
What type of bacteria uses the enzyme nitrate reductase to metabolize nitrogen oxides and transform them back into nitrogen gas? Denitrifying
Unlike many elements contained in the air, where is phosphorus commonly found? Rock
When water erodes phosphorus containing rocks, phosphates, are __________ into the water. dissolved
Are the dissolved phosphates in water able to be assimilated by plants? Yes
How long can a single atom of phosphorus be caught in a biological cycle for? 100000
What man made invention requires phosphorus and nitrogen as part of its ingredients? Fertilizers
Fertilizers can have a _______ impact on ecosystems when large amounts of nitrogen and phosphorus are introduced. negative

Biology-Ecology Crossword

Type
Crossword
Description

A science that deals with the relationships between groups of living things and their environments Ecology
The place or type of place where a plant or animal naturally or normally lives or grows Habitat
Any living component that affect another organism Biotic Factor
Drawing from natural ecosystems which are defined as the network of interactions among organisms and between organisms and their environment Ecological Model
Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems Abiotic Factor
The function or position of a species within an ecological community Niche
An autotrohpic organism that serves as a source of food for other organisms in a food chain. Producer
A heterotrophic organism that feeds on other organisms in a food chain. Consumer
The total mass of living matter within a given unit of environmental area. Biomass
An animal that feeds on plants. Herbivore
An animal that feeds on flesh. Carnivore
An animal that eats both plants and animals. Omnivore
an animal that feeds on dead organic material detritivore
break down dead or decaying organisms decomposer
the position an organism occupies in a food chain trophic level
series of organisms each dependent on the next as a source of food food chain
a system of interlocking and interdependent food chains food web
the flow of chemical elements between living organisms and the enviroment biogeochemical cycle
when a plant absorbs water in its roots transpiration
the chemical processes by which atmospheric nitrogen is assimilated into organic compounds nitrogen fixation
the process of ammoniating; decomposition with production of ammonia ammonification
biological oxidation or ammonium to nitrite followed by the oxidation of the nitrite to nitrate nirtification
the loss or removal of nitrogen or nitrogen compounds denitrification
the trapping of the sun's warmth in a plants lower atmosphere greenhouse effect
an organism that is able to form organic substances from simple inorganic substances autotroph
an organism deriving its nutritional requirements from complex organic substances heterotroph
process by which plants use sunlight to synthesize foods from carbon dioxide and water photosynthesis

Nitrogen Cycle Crossword

Type
Crossword
Description

A chemical element atomic number is 7 and symbol is N Nitrogen
The conversion of ammonium to nitrate Nitrifying
N03 Nitrate
The envelope of gases surrounding the earth or another planet Atmosphere
The state or process of rotting; decay Decomposition
NH4+ Ammonium
Nitrogen fixing monerans in __________ root nodules (#7 in N-cycle) legume
FBI Detritivores
Organisms in the soil involved in every step of the nitrogen cycle. Bacteria
Organisms such as bacteria or fungi Decomposers
Process by which nitrogen in the Earth's atmosphere is converted into a compound in the soil by bacteria that live in the root nodules of certain plant legumes Nitrogen fixation

Ecosystems Crossword

Type
Crossword
Description

The nonliving parts of an ecosystem Abiotic Factor
A predator that is at the top of a food chain and that is not preyed upon by any other animal Apex Predator
A living part of an ecosystem Biotic Factor
A relationship between two species in which one species benefits and the other is neither helped or harmed Commensalism
An interaction that occurs when organisms try to get the same resources Competition
All the populations of organisms in an ecosystem Community
An organism that obtains energy by feeding on other organisms Consumer
A helpful interaction among organisms living in a limited area that aids each organism's survival Cooperation
An organsim that gets energy by breaking down dead organisms and the wastes of living things Decomposer
The process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere Denitrification
All the living and nonliving parts of an environment as well as the ineractions among them Ecosystem
An organism that a parasite lives in or on Host
An environmental factor that prevents a population from increasing Limiting Factor
A symbiotic relationship between two organisms in which both organisms benefit Mutualism
An organism's role in its environment Niche
The process that converts nitrogen in the atmosphere into compounds in the soil that are useful to a varity of organisms Nitrogen Fixation
An organism that lives in or on another organism and benefits at the other organism's expense Parasite
A symbiotic relationship in which one organism benefits and the other is harmed Parasitism
A process by which plants use the sun's energy to make food Photosynthesis
A group of organisms of the same species living in the same place Population
A relationship in which one animal hunts, kills and eats another animal Predation
An organism that eats producers Primary Comsumer
An organism in a food web or food chain that makes its own food Producer
A close relationship between two species that benefits at least one of the species (3 types-mutualism, commensalism, parasitism) Symbiosis
A feeding level in an ecosystem Trophic Level