Help please I'll give brainlist :) just the first part
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Answers: 3
Biology, 21.06.2019 19:00
Which element provides strength to the exoskeleton of clams and oysters
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Biology, 21.06.2019 21:30
What was dr. willem johan kolffโs 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 patientโs 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.
Answers: 1
Biology, 22.06.2019 09:00
What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction
Answers: 3
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