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Why do scientists collect data about the amount of water vapor in the air? (WHY) A. to determine atmospheric pressure B. to determine humidity levels C. to monitor evaporation rates D. to predict wind
asked
Jun 5, 2017
Social Studies
middle-school
1
answer
3
votes
160k
views
How does the circulatory and digestive systems work together? A. The digestive system provides oxygen to circulatory system which then transports it throughout body. B. The circulatory system brings food
asked
Sep 13, 2016
Biology
high-school
2
answers
4
votes
202k
views
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