Global Warming - Global Warming
Global Warming (1) Add new question
Question
Q: What do you know about global warming?
| Option | Answer | Is Correct |
|---|---|---|
| 1 | In the history of the Earth, many ice ages have occurred. More ice ages will almost certainly come at an interval of 4O,000--lOO,000 years. This would have a serious impact on civilization, because vast areas of land (mainly in North-America, Europe, and Asia) could become uninhabitable. It would still be possible to live in the tropical regions, but with possible loss of humidity/water. Currently, the world is technically existing in a warm period between such ice ages, and all civilization save a few hunter-gatherer populations has come into existence within that time. | |
| 2 | A less predictable scenario is a global pandemic. For example, if HIV mutates and becomes as transmissible as the common cold, the consequences would be disastrous, but probably not fatal to the human species, as some people are immune to HJV. This particular scenario would also contradict the observable tendency for pathogens to become less fatal over time as a function of natural selection. A pathogen that quickly kills its hosts will not likely have enough time to spread to new ones, while one that kills its hosts more slowly or not at all will allow carriers more time to spread the infection, and thus likely out compete a more lethal species or strain. A real-life example of this process can be found in the historical evolution of syphilis towards a less virulent form. Also as a virus mutates in a direction of being easily transmittable it will likely give up much of its virulence in the process. Though this is not to say that a highly destructive and highly transmissible disease is not possible. Of course, a pandemic resulting in human extinction need not arise naturally; the possibility of one caused by a deliberately- engineered pathogen cannot be ruled out | |
| 3 | The 20th century has seen a rapid increase in human population due to medical advances and massive increase in agricultural productivity made by the Green Revolution. Between 1950 and 1984, as the Green Revolution transformed agriculture around the globe, world grain production increased by 250%. The Green Revolution in agriculture helped food production to keep pace with worldwide population growth. The energy for the Green Revolution was provided by fossil fuels in the form of fertilizers, pesticides, and hydrocarbon fueled irrigation. |
Are you prepared and ready for your Exam?
Test your preparation with free online test. Stay ahead from others. Self assessment/analysis at your finger tips.
- Free Registration
- Free 25 test for new members equivalent to 250 question.
- 73225+ free, good quality MCQs included in the system.
Win Prizes
Take part in our quiz competition to win cash prizes, Mobile phone credit and more....
Visit our quiz competition page