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Write a sentence about soil and why its a valuable earth resource
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Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.
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Biology, 22.06.2019 16:00
Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems
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Thyroid-stimulating hormone stimulates the thyroid gland to secrete sex hormones. true or false
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Biology, 22.06.2019 21:20
What will a hypothesis become if supported by repeated expermentation
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Write a sentence about soil and why its a valuable earth resource...
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