The worksheet asks how a plant "breathes." The answer lies in the —tiny pores on the underside of leaves. Controlled by guard cells, these openings allow the exchange of gases, which is the physical mechanism behind the "lungs" analogy. 3. Energy Conversion
"Suppose all the phytoplankton in the Pacific Ocean died overnight. Using your knowledge from the 'Lungs of the Planet' worksheet, explain the sequence of events for global oxygen levels and animal life." The worksheet asks how a plant "breathes
If you are stuck on a specific question, the Holt McDougal "Interactive Reader" usually highlights the exact sentence containing the answer in the margins. Final Thought Energy Conversion "Suppose all the phytoplankton in the
Once you have filled out your , don’t close the book. The exam will ask you to apply this concept to real-world scenarios. The exam will ask you to apply this