What human activity is most responsible for the damage to the ozone layer? a) the use of freon and cfc spray propellants. b) deforestation and interruption of the water cycle. c) the contamination of groundwater with mercury and pcbs. eliminate d) burning of fossil fuels and the subsequent creation of acid rain.
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Biology, 21.06.2019 21:30
What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.
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Biology, 22.06.2019 01:00
Drag each label to the correct location on the table. each label can be used more than once. decide whether each statement describes saturated fat, unsaturated fat, or both saturated and unsaturated fats.
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Biology, 22.06.2019 04:50
Describe the function of the endomembrane system? what organelles are involved?
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Biology, 22.06.2019 11:00
3what is the range of the function shownin the graph? ucation solutionsnw novo-9-8-7 -6 -5 -4 -3 -2 -1123456789
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What human activity is most responsible for the damage to the ozone layer? a) the use of freon and...
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