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a particular location on Earth distinguished by its particular mix of interacting biotic and abiotic components
some ecosystems have these; however, in most ecosystems it is difficult to determine where one ecosystem stops and the next begins
the process by which other organisms gain energy from eating the tissues of producers
are able to use the suns energy to produce usable energy through the process called photosynthesis
gross primary productivity (GPP)
the total amount of solar energy that the producer in an ecosystem capture via photosynthesis over a given amount of time
the proportion of consumed energy that can be passed from one tropic level to another
the movement of matter within and between ecosystems involving biological, geologic, and chemical processes
when water moves across the land surface into streams and rivers, eventually reaching the ocean
water moves down into the soil where plants can absorb it, or down through layers of rock to recharge aquifers
an event caused by physical, chemical, or biological agents that results in changes in population size or community composition; not necessarily bad
all of the land in a given landscape that drains into a particular stream, river, lake, or wetland
a measure of how much a disturbance can affect the flow/exchange of energy and matter in an ecosystem; the ability of an ecosystem to resist change from a disturbance
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