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What is algin? A. Diatomaceous earth used as an insulating material B. Brown algae C. A substance produced by brown algae used to thicken foods. D. Diatom shells
answered
Apr 27, 2018
Biology
middle-school
6
votes
1.9k
views
Ecosystems are in danger from all of the following except __________. a. increased thermal pollution b. decreased eutrophication c. increased air pollution d. oil spills
answered
Aug 4, 2017
Biology
high-school
4
votes
183k
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