1. “Research the problem” matches with “use reliable sources, talk to experts and take notes”
2. “Organize data” matches with “create charts or graphs to display the results”
3. “Design an experiment” matches with “set up a procedure for testing your ideas; including variables and controls”
4. “Hypothesis” matches with “must be testable and falsifiable”
5. “Choose a problem” matches with “Come up with a question that can be answered”
Answer: gas in the air, pollution
Explanation:
It's because the main photosynthesis component (Chlorophyll) mostly absorbs red and blue portions. It reflects the green portions which is why most plants are green
