Earth has a lot of oxygen in the atmosphere where Mars and Venus have their oxygen locked up in carbon dioxide and in minerals. Please read this article about a time in Earth's history called the Great Oxygenation Event that led to mass extinction and then answer this question: What was responsible for introducing large amounts of oxygen to Earth's atmosphere?
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Geography, 23.06.2019 18:00, ekerns2000paa19x
Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel
Answers: 1
Geography, 23.06.2019 23:30, TheOneWhoSucksAtMeth
Which statement about new zealand’s first inhabitants is not true? a. the maori have no political power today. b. the origin of the maori is in dispute by scholars. c. the maori are trying to reassert their claims to the land. d. the maori lost most of their land in the 1800s to the british colonists. (gradpoint)
Answers: 1
Earth has a lot of oxygen in the atmosphere where Mars and Venus have their oxygen locked up in carb...
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