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Chapter 8

The Cellular Basis of Activity

biotic the living components of the world -in ecosystems, these components include all living things
abiotic the non-living components of the world -in ecosystems, these components include sunlight, wind, nutrients, and minerals -absorbed by organisms when excreted as waste or when die
decomposer an organisms that lives on decaying organic material, from which it obtains energy and its own raw materials for life -consume partially decomposed organic matter and excrete nutrient-rich waste like nitrogen, phosphorous, and calcium
biosynthesis the process of putting together or building up the large molecules characteristic of a particular type of cell or tissue, in other words, reactions that put create the macromolecules needed for life
ecology the study of living and non-living components of the environment and of the interactions that affect biological species
ecosystems a biological community in its abiotic environment
when the types and amounts of matter in an ecosystem ------, the ecosystem --- -remains essentially the same across time -remains in balance
when the types and amounts of matter in an ecosystem -, the ecosystem ----- - change -is forced to change too
not only does - move through an ecosystem, but some of it makes a complete - within it -matter -cycle
Water Cycle... the water cycle collects and redistributes the Earth's water supply
Carbon Cycle... in a stable ecosystem, the total number of carbon atoms will remain approximately the same
What are the four main processes that move carbon? 1. biological processes 2. burial and decomposition process 3. geochemical processes 4. human processes
Nitrogen Cycle... the atmosphere is the main reservoir of nitrogen; it also cycles through the soil and tissues of living organisms
Created by: emilyottinger



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