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HW #1 - AOS 100 Homework#1 1 If life had never evolved on...

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AOS 100 Homework #1 1) If life had never evolved on Earth how the chemical composition of the atmosphere would be different than it is today? Explain your answer with reference to two important chemicals that are found in our atmosphere? It is known that 98% of the universe is composed of H and He. However, Earth’s gravity was not strong enough to keep hold of these simplest and lightest atoms, H and He; moreover, a lot of them got burned off from atmosphere as it became close to sun. Because all the hot gases were trapped inside the Earth, it happened to be released out by volcanic and steam vent action; thus, it began to cool. Gases that were out by these actions contained H 2 O, CO 2 , N 2 . These changes modified the atmospheric composition of Earth like following. Since no life has evolved, there would be no photosynthesis makes O 2 ; thus, the atmospheric composition of Earth should remain the same. 2) In the game of baseball, hitting involves striking a thrown ball with a wooden bat. Upon
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