Biology
How do bacteria help plants?
+ Curated links to activities about the nitrogen cycle and eutrophication
+ Background video on nitrogen fixation
+ Audio version of article
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+ Curated links to activities about the nitrogen cycle and eutrophication
+ Background video on nitrogen fixation
+ Audio version of article
+ Introductory videos on bats and wildfires
+ Article translated into Spanish
+ Links to lesson plans about echolocation and habitat restoration
+ Introductory video on vitamins
+ Links to micronutrients lesson plans
+ Introductory videos on wheat and flour
+ Curated links to mutation lesson plans
