Answer:
<em>The correct option is C) How does sunlight affect a model of a biogeochemical cycle?</em>
Explanation:
A scientific question can be described as a question based on which a hypothesis can be made and observations and experiments can be performed. The results from these experiments and observations would account for the validation of a hypothesis. Hence, a scientific question should be a question based on which a hypothesis can be made and experiments can be performed.
In the option C, the sunlight might increase or decrease various processes of the biogeochemical cycle. We can hypothesize and perform experiments to get the results. Hence, it is a scientific question.
Following are the steps to be taken while handling chemicals with precautions:
1. Application of droppers to transfer small amounts of chemicals into another glassware, as it will inhibit the unwanted overflow of the chemical.
2. Check the test tubes for chips before using them, otherwise, it may leak the chemicals within them.
3. Application of tongs to move the hot components as they may even result in extreme burns.
4. Washing the hands after concluding the lab experiment is necessary, as it will make sure that the food does not get intoxicated with the chemicals present in the hands.
I don't know the answer i am so sorry.
