Learning Task 3: Read the words in both columns. Match column A with Col- umn B. Write your answer in your notebook. A. Causes of Extinction of Species Column A A. Climatic Heating and Cooling B. Changes in Sea Levels or Cur- rents C. Asteroids / Cos- mic Radiation D. Acid Rain E. Disease / Epi- demic F. Spread of Inva- sive Species G. Human Causes of Extinction H. Habitat Degra- dation I. Climate Change Column B 1. From John W. Williams' research, their findings indicated that "By the end of the 21st century, large portions of the Earth's surface may experience climates not found at pre- sent and some 21st century climates may disappear. 2. Habitat loss and degradation affect 86% of all threatened birds, 86% of mammals and 88% of threatened amphibi- ans. 3. Increase in population, destruction/fragmentation of habi- tat, pollution and climate change/global warming 4. They use resources that the other species depend on. Once competition gets too great, the survival of the fittest plan will begin, and one of the species, usually the natural one, will die off. 5. This forms when sulfur dioxide and / or nitrogen oxides are put into the atmosphere. Increases the acidity of the soil which affects plant life. It can also disturb rivers and lakes to a possibly lethal level. 6. Each species has defense mechanisms like immunities and the ability to fight disease. With the changing climate and landscape certain species are losing their ability to fend off disease. They are becoming more susceptible to disease and epidemics, which can lead to their eventual extinction. 7. The biodiversity Earth can't keep up with the rapid chang- es in temperature and climate. The species are not used to severe weather conditions and long seasons. 8. This is the result of melting freshwater. The denser, saltier water sinks and forms the currents that marine life de- pends on. Ocean floor spreading and rising also affects sea level. 9. The reverberations of their impact to Earth can be felt around the world. The impact site is completely destroyed. Radiation is being emitted from outer space and the sun. A supernova remnant is one source of cosmic radiation.
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Matching the causes of extinction of species in Column A with their corresponding descriptions in Column B:
A. Causes of Extinction of Species B. Description
1. G. Human Causes of Extinction 3. Increase in population, destruction/fragmentation of habitat, pollution, and climate change/global warming
2. H. Habitat Degradation 2. Habitat loss and degradation affect 86% of all threatened birds, 86% of mammals, and 88% of threatened amphibians.
3. C. Asteroids / Cosmic Radiation 9. The reverberations of their impact to Earth can be felt around the world. The impact site is completely destroyed. Radiation is being emitted from outer space and the sun. A supernova remnant is one source of cosmic radiation.
4. D. Acid Rain 5. This forms when sulfur dioxide and/or nitrogen oxides are put into the atmosphere. Increases the acidity of the soil which affects plant life. It can also disturb rivers and lakes to a possibly lethal level.
5. E. Disease / Epidemic 6. Each species has defense mechanisms like immunities and the ability to fight disease. With the changing climate and landscape, certain species are losing their ability to fend off disease. They are becoming more susceptible to disease and epidemics, which can lead to their eventual extinction.
6. F. Spread of Invasive Species 4. They use resources that the other species depend on. Once competition gets too great, the survival of the fittest plan will begin, and one of the species, usually the natural one, will die off.
7. A. Climatic Heating and Cooling 7. The biodiversity Earth can't keep up with the rapid changes in temperature and climate. The species are not used to severe weather conditions and long seasons.
8. B. Changes in Sea Levels or Currents 8. This is the result of melting freshwater. The denser, saltier water sinks and forms the currents that marine life depends on. Ocean floor spreading and rising also affect sea level.
9. I. Climate Change 1. From John W. Williams' research, their findings indicated that "By the end of the 21st century, large portions of the Earth's surface may experience climates not found at present, and some 21st-century climates may disappear.
Please note that the descriptions are not complete sentences, but they match the respective causes of extinction.