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What Does Life Need to Live?
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In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).
Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.
Stick to It: Adhesion II
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Water sticks to all kinds of things in nature — flowers, leaves, spider webs - and doesn't stick to others, such as a duck's back.