describe energy flow in living systems including food
chains and food webs (*6.8-C),
identify responses in organisms to external stimuli such
as the pesence or absence of heat or light (*6.12-B),
identify components of an ecosystem to which organisms
may respond (*6.12-C),
identify componenets of an ecosystem (*7.12-A),
observe and describe how organisms including producers,
consumers, and decomposers live together in an environment and use existing
resources (*7.12-B),
describe how different environments support different
varieties of organisms (*7.12-C),
describe intractions within ecosystems (*8.6-C).
* Refers to the Texas Essential Knowledge & Skills
for science.
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