Energy
organisms that make their own food
What is a producer or autotroph?
all of the members of one species in one place
population
Photosynthesis, respiration, the burning of fossil fuels, and the decomposition of plants and animals are all part of the cycle of this nutrient
What is carbon?
this can be both a biotic and abiotic factor
What is soil?
the total amount of living tissue within a trophic level
What is biomass?
the smallest level of ecological division
What is individual?
These organisms are essential for converting nitrogen in the nitrogen cycle
What are bacteria?
What is a scavenger?
What is chemosynthesis?
the lowest level that includes living and nonliving factors
What is ecosystem?
Without this type of consumer, dead and decaying matter would build up and hold onto nutrients
What are decomposers?
this part of an ecosystem is not shown on a food web
What are abiotic factors?
Energy flows in this pattern/direction, while nutrients flow in this pattern/direction
What is one direction and a cycle?
Most producers get their energy from sun in a process called
What is photosynthesis?
an increase of carbon dioxide emissions can contribute to this problem
What is global warming?
The removal of this type of organism would have the biggest effect on a food web
What is a producer?
The amount of energy transferred from one trophic level to the next
What is 10%?
Too much nitrogen in the water can lead to this problem
What is an algea bloom?
Organisms at the top of the food chain are usually
What is a carnivore?