Geography
Geography, 12.11.2019 04:31, aprilpendergrass

17. why is the earth's history separated into so many different sections of time?

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Biology, 09.08.2019 21:30, thejusticeleaf
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Biology, 09.08.2019 21:30, montgomeryaevans
all the time that has passed since earth formed fossil record plate tectonics a table that divides earth's history into time periods biogeography the study of the geographical distribution of fossils and living organisms continental drift a theory that the major landmasses of the earth move homologous structure geologic time the history of life on earth, based on fossils that have been discovered geologic time scale the body parts that are similar in related animals a theory that the earth's surface is made of large sections of crust that move
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Geography, 05.10.2019 08:30, u8p4
7. the timeline below covers the entire interval of earth's history, from the formation of the earth and solar system nearly 4.6 billion years ago to the present day. examine the timeline, then answer the question that follows. recorded human history accounts for about half of the earth's history. only the last 100 million years of earth's history. all of the earth's history. a very small portion of the earth's history.
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Social Studies, 15.10.2019 19:20, gdhshwjfs
The enormous state university history department offers three courses—ancient, medieval, and modern history—and the chairperson is trying to decide how many sections of each to offer this semester. the department is allowed to offer 42 sections total, there are 4,500 students who would like to take a course, and there are 55 professors to teach them. sections of ancient history have 100 students each, sections of medieval history hold 50 students each, and sections of modern history have 200 students each. modern history sections are taught by a team of two professors, while ancient and medieval history need only one professor per section. how many sections of each course should the chair schedule in order to offer all the sections that they are allowed, accommodate all of the students, and give one teaching assignment to each professor? hint [see example 2.] (assume each section has the maximum number of students allowed.)
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17. why is the earth's history separated into so many different sections of time?...

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