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would be options for arrows 1,2 and 3

would be options for arrows 1,2 and 3

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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would be options for arrows 1,2 and 3

In the geologic time scale drawn below, which event occurred at approximately arrows 1, 2, and 3. **Diagram Description:** The diagram is a horizontal bar representing the geologic time scale from 4.6 billion years ago (Ga) to today. It is divided into segments marked as 4.0 Ga, 3.0 Ga, 2.0 Ga, and 1.0 Ga. Three arrows, labeled 1, 2, and 3, point to specific positions along this timeline: - **Arrow 1** is near 4.0 Ga. - **Arrow 2** is near 2.0 Ga. - **Arrow 3** is near 1.0 Ga. Below the diagram, there are three labeled fields for selecting events corresponding to each arrow: 1. Arrow 1: [Choose] 2. Arrow 2: [Choose] 3. Arrow 3: [Choose] **Dropdown Menu Options:** - Oldest microfossils - Evolution of Homo sapiens - Cambrian radiation of animals - First appearance of fishes - Initial rise of atmospheric oxygen These options are meant to be matched with the labeled arrows on the geologic time scale, representing significant events in Earth's history.
Transcribed Image Text:In the geologic time scale drawn below, which event occurred at approximately arrows 1, 2, and 3. **Diagram Description:** The diagram is a horizontal bar representing the geologic time scale from 4.6 billion years ago (Ga) to today. It is divided into segments marked as 4.0 Ga, 3.0 Ga, 2.0 Ga, and 1.0 Ga. Three arrows, labeled 1, 2, and 3, point to specific positions along this timeline: - **Arrow 1** is near 4.0 Ga. - **Arrow 2** is near 2.0 Ga. - **Arrow 3** is near 1.0 Ga. Below the diagram, there are three labeled fields for selecting events corresponding to each arrow: 1. Arrow 1: [Choose] 2. Arrow 2: [Choose] 3. Arrow 3: [Choose] **Dropdown Menu Options:** - Oldest microfossils - Evolution of Homo sapiens - Cambrian radiation of animals - First appearance of fishes - Initial rise of atmospheric oxygen These options are meant to be matched with the labeled arrows on the geologic time scale, representing significant events in Earth's history.
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