tailieunhanh - Delta's key to the next generation toefl test part 18

Tham khảo tài liệu 'delta's key to the next generation toefl test part 18', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Summarizing Important Ideas Cultural Evolution The history of life is the story of biological evolution on a changing planet and at no time has change ever been as rapid as in the age of humans. The evolution of humans and their culture has had enormous consequences making humans a new force in the history of life. Cultural evolution has occurred in stages beginning with the nomads who hunted and gathered food on the African grasslands two million years ago. These hunter-gatherers made tools organized communal activities and divided labor. Next came the development of agriculture in several parts of the world 10 to 15 thousand years ago. Agriculture led to permanent settlements the first cities and trade among societies. An important cultural leap was the Industrial Revolution which began in the eighteenth century. Since then new technology has escalated exponentially and so has the human impact on the planet. Throughout this cultural evolution from simple hunter-gatherers to high-tech societies humans have not changed much biologically. Our knowledge is stored not in our genes but in the product of thousands of years of human experience. Cultural evolution has enabled us to defy our physical limitations and shortcut biological evolution. We no longer have to wait to adapt to our environment through natural selection we simply change the environment to meet our needs. We are the dominant species of life and bring environmental change wherever we go. 5-6. An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points. Cultural evolution has made humans a new force in the history of life. Answer Choices T Biological evolution is the most important force in the .