Problem: Martha is currently walking around the forest when she notices two rocks that catch her attention. She quickly picks them up, stows them in her backpack and runs to the local geologist. She shows them to Linda, the geologist, and asks what she can tell her about the rocks. Linda informs her that the yellow rock has been subject to horizontal compression, but the blue rock has not been horizontally compressed. She promises Martha she will look into the rocks in more detail to answer more questions for her. Which color rock is more likely to be thicker?

A: yellow

Problem: UK and France had scientific bases in Antarctica. UK had a base and studied the climate in East Antarctica, while France observed the climate in West Antarctica. Which country observed a colder weather?

A: UK

Problem: Ben and Andy researched significant greenhouse gasses in Earth's atmosphere. Andy researched more about carbon dioxide, while Ben researched methane gas. Which researcher studied less about deforestation?

A: Ben

Problem: Jacob and Thomas were conducting an experiment in a chemistry class. The goal of the experiment was to identify the strength of unknown acids by examining the products formed in a chemical reaction. After they completed the experiment, Jacob concluded that he was given a strong acid, while Thomas concluded that he was given a weak acid. Which person's acid, Jacob's or Thomas's, will have a higher ratio of hydrogen ions to acid?

A:
Jacob's