APES FINAL EXAM STUDY GUIDE
what are environmentalists concerned with - ✔✔people and environment
explain sustainable development - ✔✔meet needs for indefinite future
what is sustainability - ✔✔whether or not it can be continued indefinitely
main problem caused by population growth - ✔✔increased demand for resources
what themes are used to maintain a long tern relationship with the natural world - ✔✔sustainability, stewarship, sound science
what is the major biome of the central US - ✔✔grassland
what biome is not found in the US - ✔✔tropical rainforest
what are the 3 major biotic components of ecosystems - ✔✔producers, consumers, decomposers/ detritus feeders
difference betweenfood chain and web - ✔✔chain- 3 to 4 organisms web- all possible feeding relationships 1 / 3
who makes up 1st trophic level - ✔✔prducers or green plants
2nd trophiclevel - ✔✔primary cosumers
define biomasss - ✔✔total weight of all organisms at each tropic level
how does biomass compare between produceres, herbivores, and carnivores - ✔✔decreases as you move up levels
wha % of biomass passed to next level - ✔✔10
define biosphere - ✔✔all species together with environmen
ecosystems - ✔✔large functional units of biosphere
species - ✔✔total population of kind of prganisms that can interbreed and produce offpsring
biome - ✔✔several related ecosystems
producer - ✔✔derive energy from abiotic sources
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herbivore - ✔✔feed on plants
consumer - ✔✔feed on living organisms
detritus - ✔✔dead plants, animal mater, fecal waste
mutualism - ✔✔both benefit
abiotic factors - ✔✔plysical and chemical factors of environment
optimum temperature - ✔✔where organisms grow best
limit of tolerance - ✔✔point of barley survivng
climate - ✔✔temp and precip
permafrost - ✔✔permanantly frozen soil characteristic of tundra
desert - ✔✔least amount of rain, warm
ecotone - ✔✔trasition region between ecosystems
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