Most mexicans speak Spanish because that is their culture and it probably came along and changed from time to time. <span />
The ashes and smoke after an eruption
Answer:
C
Explanation:
Just took the test and got 100% so this is correct on edge.
Scientists can't be sure about the early atmosphere and can only draw evidence from other sources. For example, volcanoes release high quantities of carbon dioxide. Iron-based compounds are present in very old rocks that could only have formed if there was little or no oxygen at the time.
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Explanation: At latitude 0° (the Equator) day length will be approximately 12 hours. Areas on the Equator have a constant 12 hours of daylight all year round. As latitude increases to 80° (polar circles - north or south), day length can be seen to increase to 24 hours or decrease to zero (depending on the time of year).