Eunice Foote, born in 1819 in the USA, did home experiments using the little knowledge of biology and chemistry that she acquired at school, and obtained excellent results. 

In one of these experiments, she used two glass tubes with a thermometer inside. One of them had regular air inside, and the other one had a higher concentration of CO₂. Once the temperature of both tubes reached 90ºF, she left them outside to warm up in the sun and wrote down the temperature indicated in the thermometers. She drew the following graphs: 

1- Use the information in the tables to draw a temperature graph based on time and answer the following questions.

a.     For how long did Eunice Foote measure temperature?

b.    Which tube reached a higher temperature?

c.     What is the difference in temperature between the tubes in her last measurement?

2- In 1856, Eunice went alongside her husband (a mathematician and inventor) to the American Association for the Advancement of Science (AAAS) to publish her results, but she was not allowed to read them because she was a woman. Luckily, a colleague of hers, Joseph Henry, read her article and used his speech to inform against the attitude of the association: "Science has no country or gender. Women's sphere is not only about beauty and usefulness, but also about truth".

Using the graph and your answer to the questions above, explain what effect CO₂ has on air when it is exposed to sunlight. Pretend you are Eunice Foote, and you are given permission to talk at the AAAS.