Producers make up more biomass than primary consumers because a. only 10 percent of the energy at each trophic level is passed on to the next level b. they do not eat anything c. pound for pound, plant sugars are heavier than fat d. both primary and secondary consumers eat grass
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The pattern of this wave changes between its beginning and end. what is true about the amplitude and wavelength of the wave when the pattern changes?
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According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes
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The diagram is represented of a part of a plant cell. identify the locations where proton concentration builds up during photosynthesis and cellular respiration
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Producers make up more biomass than primary consumers because a. only 10 percent of the energy at...
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