Please answer this: Keith was playing a simulation game. In the game he could travel around the Sun in the future. He started the game in present time, which was denoted as time A. Then he traveled 5.4 billion years into the future, which was denoted as time B. Finally, he reached 7.5 billion years into the future, which was denoted as time C. He was amazed to find how the Sun would change over time. When would the Sun's core be cooler, time A or time B?
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Answer: time A

Please answer this: James is memorizing the periodic table and some of the features of the elements on it. He is currently working on the fourth row which starts with Potassium (K) on the far left and ends with Krypton (Kr) to the far right. Given Lithium (Li) and Neon (Ne) are in the same row of the periodic table, which element has more electrons, Lithium (Li) or Neon (Ne)?
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Answer: Neon (Ne)

Please answer this: Moon and Earth were two sister planets, both inhabited by humans. People of Earth released large quantities of greenhouse gases into the atmosphere over the last decades, while Moon people were taking good care of their planet and the environment. Which planet didn't record parallel increases in concentration of carbon dioxide and average global temperature?
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Answer:
Moon