Kali designs a set-up to investigate germinating seeds. She fills a jar with seeds that have soaked in water.

In the jar, she places a beaker that contains a solution of bromothymol blue. Bromothymol blue turns green in the presence of carbon dioxide.

She will record observations on Day 1, wait 24 hours, and record again on Day 2.

Which question has Kali MOST LIKELY ASKED as she set up this investigation?

What happens to the bromothymol blue solution in the presence of germinating seeds?