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These discussion prompts focus on the nature of bacteria and types of antibiotics, as well as methods for dealing with antibiotic resistance.

These questions focus on student understanding of gram-negative bacteria and the bacteria's response to antibiotics.

These discussion prompts ask students to think about ways that different elements create varied results in battery design, and related redox reactions.

Students will search the Science News archive for stories related to battery research.

Based on the Science News article "Charging the future," these questions focus on battery design, how lithium-ion batteries compare with newer types and the nature of experimental design.

These discussion prompts cover the types of rocks and minerals found on Earth, and isotopes, their measurement and their applications.

Students will work in groups to explore available data and research various aspects of climate change and then present their findings to the class.

These discussion prompts cover radiant energy coming to and from Earth, the effects of global warming on the land, ocean, atmosphere and on species, and possible methods of averting or adapting to climate change.

These discussion prompts cover the basics of chemical catalysts, enzymes as biological catalysts, the energies and physical properties of catalysts, plus related applications.

Students will search the Science News archive to explore the history of catalytic material technology.

These questions focus on the use of catalysts in common industrial reactions and new research on alternatives to the precious metals currently used as catalysts.

Students will calculate the angular momentum and density of the moon and consider the implications of the results for various theories of the moon's origin.