Section 4

I :

How has your research been going/since then?

K :

I’ve made improvements/to the photocatalyst/so that water can be purified/in 15 minutes. However,/no matter how well my research goes,/it’s just a part of the solution/to the world’s water problem.

I :

What else/is needed to solve the problem?

K :

Scientists in the world/will have to work together. They also need to cooperate with governments/and other organizations. Alone,/a single drop of water/can’t do much. But when many drops come together,/they can sustain life/on our planet. Just as water drops come together/to form oceans,/I believe/that we all must come together/when we tackle this global problem.