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Explore volcanic eruptions, and their devastating aftermath
These discussion prompts explore volcanic explosivity and collapse, the ecosystem and health effects of eruptions and how to keep people safe during natural disasters.

Rising Carbon Dioxide Threatens Lake Food Webs
Students will explore how rising carbon dioxide is threatening a lake food web, and will measure how the environment affects the heart rate of water fleas.
Surveying a sensitive ecosystem
These discussion prompts cover the pH scale, the solubility of gases, food webs and how organisms react to climate change.
Carbon dioxide’s ecological footprint
Students will answer questions based on the Science News article "Rising CO2 threatens lake food webs" and an accompanying graph tracking pH.