Curated OER
Viruses and Bacteria
A series of questions about archaebacteria and eubacteria reinforce a chapter on viruses and bacteria. This activity is from chapter 18 of an unspecified textbook, but could work with your biology lecture as well. High schoolers identify...
NASA
Nasa: Climate Kids: What Is Happening in the Ocean?
Find out why the oceans on Earth are so vital to the cycling of matter and energy through its spheres.