Science: Question Preview (ID: 32738)

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process that changes atmospheric nitrogen into compounds usable by living things
a) nitrogen fixation b) chemosynthesis c) photosynthesis d) climate
process during which liquid water changes into water vapor
a) condensation b) atmosphere c) precipitation d) evaporation
cannot be separated by chemical means
a) nitrogen fixation b) element c) food chain d) food web
process during which water vapor changes into a liquid
a) evaporation b) precipitation c) condensation d) photosynthesis
unicellular organisms without a membrane-bound nucleus
a) bacteria b) element c) atmosphere d) release
living and nonliving things in a given area
a) bacteria b) nitrogen fixation c) food web d) ecosystem
average weather conditions in an area over time
a) condensation b) food chain c) energy pyramid d) climate
layer of gases surrounding Earth
a) ecosystem b) evaporation c) atmosphere d) photosynthesis
living thing in the ecosystem
a) climate b) abiotic factor c) biotic factor d) element
nonliving thing in an ecosystem
a) abiotic factor b) biotic factor c) element d) food web
water that falls from the clouds to the Earth's surface
a) condensation b) evaporation c) precipitation d) release
to set free
a) abiotic factor b) biotic factor c) element d) release
process using chemical energy in matter to make food
a) photosynthesis b) chemosynthesis c) food chain d) food web
model showing how energy flows in an ecosystem
a) climate b) bacteria c) food chain d) food web
model of energy transfer showing how the food chains in a community are interconnected
a) food web b) energy pyramid c) photosynthesis d) food chain
model showing the amount of energy available in each step of a food chain
a) abiotic factor b) evaporation c) energy pyramid d) chemosynthesis
series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and give off oxygen
a) condensation b) photosynthesis c) food chain d) nitrogen fixation
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