#1}The portion of Earth in which all life exists is know as.....
(1)The climax (3) A population
(2)the biosphere (4)the biotic community
#2}Which statement concerning an ecosystem is corect?
(1)it can exist or without a constant source of energy input
(2)it MUST contain consumers but canexeist with out producers.
(3)it involves interactions between biotic and abiotic factors
(4)it can exist on land, but it cannot exist in lakes, rivers or oceans
#3} which relationship best describes the interactions between Lettuce and a Rabbit?
(1) preditor-prey (3) parasite-host
(2) producer-consumer (4) decomposer-scavenger
2006-11-08
14:03:35
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3 answers
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min k
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Environment