Biogeochemical Cycles Crossword
Type
Crossword
Description

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

Nutrient cycles Crossword

Nutrient cycles Crossword
Type
Crossword
Description

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

Nitrogen Cycle Crossword

Nitrogen Cycle  Crossword
Type
Crossword
Description

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

The Nitrogen Cycle Crossword

The Nitrogen Cycle Crossword
Type
Crossword
Description

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.

The Water Cycle Crossword

The Water Cycle Crossword
Type
Crossword
Description

When water vapor turns back into a liquid.
When water falls from the atmosphere back to land.
When water turns into water vapor.
The water cycle helps regulate ___________________________.
Covers 70% of the Earth.
Water is a basic _______________________ of nature.
When plants release water on to their leaves that then evaporates into vapor.
Depending on _______________________ precipitation could be rain, snow, sleet, or even hail.
When water does not get absorbed into the soil.
A large collection of tiny droplets of water or ice crystals.
The journey of water from the Earth's surface to the atmosphere, and back again.

Nitrogen Cycle Crossword Puzzle

Nitrogen Cycle Crossword Puzzle
Type
Crossword
Description

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

Photosynthesis Crossword

Photosynthesis Crossword
Type
Crossword
Description

process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugar and starches
organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
the steps in photosynthesis that occur on the thylakoid membranes of the chloroplast and that convert solar energy to the chemical energy of ATP and NADPH, evolving oxygen in the process
a green pigment found in the chloroplasts of plants, algae, and some bacteria
an organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials
specialized ground tissue that makes up the bulk of most leaves; performs most of a plant's photosynthesis
the second of two major stages in photosynthesis (following the light reactions), involving atmospheric CO2 fixation and reduction of the fixed carbon into carbohydrate.
a colored chemical compound that absorbs light, producing color
A flattened membrane sac inside the chloroplast, used to convert light energy into chemical energy.
granum (grana) a stack of thylakoids in a chloroplast
The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water.
large protein that uses energy from H+ ions to bind ADP and a phosphate group together to produce ATP
The second of two major stages in photosynthesis, involving atmospheric CO2 fixation and reduction of the fixed carbon into carbohydrate. These reactions are also called the Calvin Cycle
is the set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
a compound composed of adenosine and three phosphate groups that supplies energy for many biochemical cellular processes by undergoing enzymatic hydrolysis.

Biogeochemical Cycles Word Search

Biogeochemical Cycles Word Search
Type
Word Search
Description

hydrological cycle
carbon reserviors
denitrification
nitrogen cycle
photosynthesis
nitrification
precipitation
transpiration
carbon cycle
condensation
evaporation
groundwater
percolation
greenhouse
phosphorus
bacteria
leaching
albedo

The Nitrogen Cycle Crossword

The Nitrogen Cycle Crossword
Type
Crossword
Description

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

Water, Carbon, Nitrogen Cycles Word Search

Water, Carbon, Nitrogen Cycles Word Search
Type
Word Search
Description

nitrogenfixation
photosynthesis
carbondioxide
decomposition
deforestation
transpiration
condensation
evaporation
fossilfuels
groundwater
soilsurface
atmosphere
nutrients
producers
bacteria
consumer
nitrogen
sunlight
ammonia
animals
glacier
carbon
forest
oceans
plants
cloud
ocean
river
water
lake
air

Energy Transfer Crossword

Energy Transfer Crossword
Type
Crossword
Description

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