Photosynthesis
Cycles
Random
Webs,Chains, and Pyramids
Abiotic and Biotic Factors
100
photosynthesis gives this off for us
What is oxygen?
100
this cycle involves evaporation, condensation, and precipitation
What is the water cycle?
100
one of the gases in the atmosphere that absorbs thermal energy from the sun and keeps earth warm
What is carbon dioxide?
100
a model that shows how energy flows in an ecosystem through feeding relationships
What is a food chain?
100
the living things in an ecosystem
What is a biotic factor?
200
the greek word for light
What is photo?
200
nitrogen is also an important part of what molecule
What is DNA?
200
when producers use chemical energy in matter rather than light energy to make food
What is chemosynthesis?
200
a food chain usually is the same for every
What is an ecosystem?
200
nonliving things such as: sunlight or water
What is an abiotic factor?
300
the food energy is stored in the form of
What is glucose?
300
the process that changes atmospheric nitrogen into nitrogen compounds
What is nitrogen fixation?
300
an animal that only eats plants
What is a herbivore?
300
abiotic and biotic factors live in an
What is an ecosystem?
400
what is the process where an organisms cells use the oxygen released during photosynthesis
What is cellular respiration?
400
besides carbon, what else can enter the environment when organisms die and decompose
What is carbon?
400
the idea that energy cant be created or destroyed, but it can change form
What is the law of conservation of energy?
400
ten percent of what is passed from one trophic level to the next
What is energy
400
soil, atmosphere, and temperature are
What is an abiotic factor?
500
during photosynthesis these spilt apart
What is a water molecule?
500
where is the last place carbon is usually found
What are fossil fuels?
500
the steps in an energy pyramid that shows the availability of energy in each step of a food chain
What are trophic levels?
500
usually at the bottom of the pyramid are
What producers/plants?
500
a lack of water, an abiotic factor, affects
What is the biotic factors?
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