4PBL Vocabulary

5. Waxy or rough coatings on leaves that help trap particles and prevent damage.
7. Harmful substances in the environment that can cause damage plants, animals, or people.
9. A model or a sample of a design created to test ideas.
10. Step in design thinking where you understand the needs of people or systems.
13. A new or improved idea, product, or way of doing something.
14. Using plants to remove, absorb, or neutralize pollutants from air, water, or soil.
16. Step in design thinking where you brainstorm many possible solutions.

1. Trees that lose their leaves each year.
2. Small pores on leaves that allow gases (like oxygen, carbon dioxide, and pollutants) to enter or leave.
3. Tiny hair-like structures on leaves that trap dust and particles.
4. Step in design thinking where you describe the problem clearly.
6. Trees with needles or scale-like leaves that usually stay green all year
8. Something that fixes a problem or meets a need.
11. The effect of pollutants, presence of harmful substances in the environment.
12. Learning from something to help create a new idea.
15. Using nature's designs and processes to solve human problems.