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Human–computer interaction

The Industrial Revolution

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The Revolution in Agriculture Main goal of traditional peasant society was a stability that would ensure local food supply. Tillers resisted changes that might endanger that. But food supply was never certain, and the farther east you went the worse it got. Harvest failure meant death of starvation or malnutrition on top of hardship, and people in the countryside had it worse b/c cities usually stored grain. Poor harvests led to higher prices, and even small increases of prices put strain on the peasant and artesian families. Many families fell back on the welfare of churches and local govt?s.

HGAP De Blij Seventh edition Chapter 4

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Chapter 4: Fundamentals of Population, Location, Distribution & Density Demography ? Study of population. Key issues in population geography are population growth & migration. World population is growing in poorer countries by 80 million per year. Distribution of population describes location where people live, Population Density is the measure of number of people per unit area. Arithmetic population density is an average and is not a true measure. Physiological population density is the total population to area of cultivable land. There is strong correlation between high population density & areas with expanses of arable (farmable) land. Population data is unreliable!! Why ? because of high costs involved and disorganized information.

Unit 1

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? CHAPTER 1: AN INTRODUCTION TO BIOLOGY ? What is Biology? ? The scientific study of life. ? What does it mean to be alive? ? Some Characteristics of Life 1. Cells and organization 2. Metabolism (energy use) 3. Homeostasis 4. Reproduction, growth and development 5. Evolution ? Levels of Organization 1. Atoms 2. Molecules and macromolecules 3. Organelles 4. Cells 5. Tissues 6. Organs 7. Organ Systems 8. Organism 9. Population 10. Community 11. Ecosystem 12. Biosphere ? Unity and Diversity ? Evolution ? changes in the genetic material of species over time ? Vertical and horizontal evolution ? Classification - Taxonomy ? Grouping of species based on common ancestry ? 3 Domains (broadest categories)

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