Question

which question can be answered by following the scientific method?
what was the highest temperature that was recorded yesterday?
what is the most interesting aspect of the light - dependent reactions?
how does a change in temperature affect the stomata of a plant?
how many stomata are there on this leaf?

Explanation:

The scientific method involves making observations, forming hypotheses, conducting experiments, and analyzing data. The question "How does a change in temperature affect the stomata of a plant?" can be investigated using this method. One can observe stomata, form a hypothesis about temperature's effect, conduct experiments (e.g., expose plants to different temperatures and observe stomatal behavior), and analyze the data.

• "What was the highest temperature that was recorded yesterday?" is just a factual query (checking records) - no hypothesis - testing cycle in the strict sense of scientific method application for discovery of a relationship.
• "What is the most interesting aspect of the light - dependent reactions?" is subjective (based on personal opinion, not testable via objective scientific method steps).
• "How many stomata are there on this leaf?" is a simple counting (observation) task without the exploration of a cause - effect relationship (which the scientific method often aims for in experimental setups).

Answer:

How does a change in temperature affect the stomata of a plant?