Answered: 1. The representation must be on a…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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1. The representation must be on a linear scale (not logarithmic)

Linear scale means each year is given the same weight in your scaling. The student is to present the years in a way that really helps the audience to visualize just how long Earth has been around compared to how short an amount of time humans have been on earth, for example.

2. The must include a legend that allows the audience to interpret how they are representing the time since each event has occurred (e.g., 1cm = 1000 years, 1mL = 100,000 years, 1 second = 10,000 years)

4. The student is to include the following important events:

Start of life (~3.8 GYA^[1])
Origin of eukaryotes (~2–3.5 GYA - your choice within that range)
Origin of multicellularity (~2 GYA)
Origin of Homo sapiens(~200 KYA)
Present time (0 YA)

5. The student is to include at least 3 other events. The events must relate to the history of Earth, not human history. The student will need to find the dates of these events

Formation of Earth
Oxygenation of Earth’s atmosphere
Origin of vertebrates
Mass extinctions
Origin of land animals and land plants
Origin of mammals
Origin and/or Extinction of dinosaurs

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