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62. Humans began to settle down and domesticate plants and animals approximately
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10 million years ago. |
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1,000,000 years ago. |
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100,000 years ago. |
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10,000 years ago. |
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1,000 years ago. |
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- 49. The Americas (New World) was first peopled (colonized) approximately 1.5 million years ago. 150,000 years ago. 15,000 years ago. 5,000 years ago. 1492 ADDo you think it is important that all species be prevented from going extinct? Explain your reasoning. Also, there is a process called “de extinction” where scientist use DNA from an extinct species and genetically “recreate” that species. Do you think this is a good idea? Explain you reasoning.What is a fossil? * A rock that has turned into biological material over time Remains of an organism that have been turned to rock over time Bones of dead organisms A Walkman cassette player Lenovo @ 23 2$ & 1 2 4. 6. 7 8. 9. tab e r y u a S d. f g k shift C V b alt alt ctri
- What is the difference between micro- and macroevolution? a. Microevolution describes the evolution of small organisms, such as insects, while macroevolution describes the evolution of large organisms, like people and elephants. b. Microevolution describes the evolution of microscopic entities, such as molecules and proteins, while macroevolution describes the evolution of whole organisms. c. Microevolution describes the evolution of populations, while macroevolution describes the emergence of new species over long periods of time. d. Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations.We have looked at what the fossil record can tell us about the amazing History of Life on Earth. We've examined the evidence for an early origin for life in the sea, 3800 million years, and investigated how life invaded life about 500 million years. We've also discussed the subsequent boom in life that massively increased biodiversity but also noted how the History of Life is frequently punctuated by mass extinctions. Today we stand on the threshold of a new mass extinction event. The biodiversity that we take for granted and that sustains humans is threatened to a degree only rarely seen in 4500 million years of Earth History. NOW TO CONCLUDE, ANSWER THE QUESTION. 1. ARE WE ON THE BRINK OF A MASS EXTINCTION? WHAT WOULD BE THE CONSEQUENCES FOR SOCIETY OF LOSING HALF OF ALL SPECIES BY 2100? ARE THERE ACTIONS THAT WE CAN TAKE AS INDIVIDUALS AND AS SOCIETY TO HELP PROTECT LIFE ON EARTH?31. Which of the following is not documented in the fossil record? Group of answer choices new species transitional forms genotype frequencies extinctions skeletal structures
- Theory of Evolution PART 1 Answer the following with one sentence each question. 1. What do you know about the history of your selected area within the last 25-50 years (e.g. urbanization, geological changes, structures built or destroyed, etc)? 2. Based on this history, what hypothesis can you make about its effect on the area's nature/environment/wildlife? 3. what evolutionary changes/events do you expect to find? 4. Why do you expect to see these changes/events? 5. How will you determine these evolutionary changes/events? (your answers should within your study's limits)A scientist has a fossil that was found in a layer of rock close to Earth’s surface. He believes that the fossil is around 12,000 years old. Which method would best allow the scientist to confirm the actual age of the fossil? finding another fossil in a deeper layer of rock finding another fossil in the same layer of rock using carbon/nitrogen absolute dating using potassium/argon absolute datingWhat is adaptive Radiation It is when radiation cause mutations It is when animals adapted to solar radiation It is when a species rapidly adapts to many new and open environments
- Homo sapiens appeared in East Africa years ago 300000 O 100000 O 200000 500000 O 400000 OWould it be possible to bring extinct species back? In an article it was expressed how brinng extinct species back is still very futuristic, and we should aim at a smaller creature. Using a smaller sized species like the Christmas rat can set up scientists for potentially larger species. There is a major issue that comes up and that is incomplete genes. It makes it difficult to even compare modern day rat to the Christmas rats' genome because their genes are specialized and as more time passes, the harder it is to have a match. The article also talked about using modern day elephants to make a woolly elephant, meaning they don't want a perfect match. Rather, scientists want to make hybrids since it could be more realistic.103. The 60,000 – 30,000 ybp occupation of Australia likely indicates that humans were making use of water craft of some sort (i.e., rafts, boats, or canoes). True False