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15 Cards in this Set

  • Front
  • Back
What is a species?
group of organisms so similar to one another that they can breed and their offspring are fertile
What is the defintion of population?
it's a group of individuals that belong to the same species and live in the same area
What are communities?
assemblages of different population that live together in a particular place
What's a biome?
group of ecosystems that have the same climate and similar dominate communities
What's a detritvore?
an organism that feeds on plants and dead matter
What is the difference between a food web and food chain?
-how energy is transfered
-relationship between all the food webs
What is a ecological pyramid?
a diagram that shows the relative amounts of energy of matter
What is biomass? a trophic level?
-the total amount of living tissue within a given trophic level
-each step in a food chain or foodweb
What's a biochemical cycle?
when elements,chemical compounds, and other forms of matter are passed from one organism and biome to another
What is transpiration?
when water enters the atmosphere by evaporating from leaves of plants
What is a nutrient? a limiting nutrient?
-all chemical substances that an organism needs to subtain life
-when an ecosystem is limited by a single nutrient that is scares of cycles slowly
What's a nitrogen fixation? a denitification?
-the process of convertion nitrogen gas into ammonia
-when nitrates turns into nitrogen gas
What is primaiary productivity ?
the rate which organic matter is created by producers
What is a algae bloom?
an immediate increase in the amount of algae and other producers that reslult from a large input of limtion nutrient
What are the first three levels of consumers ?