3.1 ECOSYSTEMS
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ecosystem definition
consists of all the biotic and abiotic with which the organisms interact
habitat definition
where the animals live
speacies definition
a group of orgnisms that can reproduce fertile offspring
biodiversity definition
this is a term which refers to the variety of speacies in an ecosystem
population definition
A population is the total number of living organisms of one type of species living in a habitat.
producers definition
these are green plants which produce there own food through photosynthesis
consumer definition
consumers obtain there energy by eating other organisms
what does the arrow represent in a food chain
this is the flow of energy
where are producers located in a food chain
producers are always at the start of a food chain
primary consumer definition
primary consumers eat producers for energy
secondary and tertairy producer definition
these eat other organisms for energy
where are apex predators located in a food chain
apex predators are always top of the food chain
how is energy lost in a food chain
heat movement undigested material
niche definition
a niche is the role an organism plays in an ecosystem
how is competion caused
when two speacies over lap
intraspecific definiton
Competition that occurs amoungst organisms of the same speacies
interspecific definition
Competition that occurs amoungst organisms of different speacies
what kind of competion is more intense
intraspecific