Answer:
region is an area that includes a number of places--all of which have something in common. Geographers categorize regions in two basic ways: physical and cultural.
Explanation:
ways: physical and cultural
Sample of many kinds of living things should be examined under a microscope to determine the presence of cells.
Cells are the smallest unit that can be considered alive.
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Russia is in Europe and Asia. (F)
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Water pollution affects marine ecosystems by completely killing it off. Pollution kills fish, reefs, and other underwater life. With this pollution, animal's behaviors can change, and habitats are destroyed.
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Answer:
porous
Explanation:
rocks that has holes and holds water are called porous