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Teacher Student Question wiseacre on global warming
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| Inquisitive student-now our planet's climate is changing, but there has been and other climate changes in Earth's history? | |
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| Professor wiseacre - Yes, there have been many. Natural causes of these climate changes, in order to distinguish them from heating up now | |
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| These causes are varied: periodic changes in the Earth's orbital parameters, formation and fragmentation of supercontinents, times of increased magmatic activity in the Earth's mantle, etc.. | |
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| IS - At the present time, is changing the Earth's climate? Is there convincing evidence of this alleged change? | |
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| There are many direct and indirect evidence,and constantly being uncovered.All together make it very difficult to deny the conclusion that the planet warms,slowly but steadily,since at least a century | |
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| Okay, is heated, but that has happened before, before the existence of our species. We can be sure that this time the reason for the warming is not a natural cause? | |
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