When does the greenhouse effect become a problem?

Answer 1

It is only a problem when the changes become unpleasant for us.

As the weather changes, new plant and animal species will move into and out of ecosystems, water levels will rise, rainfall patterns will change, and other changes will become evident.

These changes could cause large migrations of people, loss of seaside cities, and farmers going out of business, not to mention droughts, floods, and new areas affected by diseases.

Some of these problems are evident now and have been evident for at least 20 years

Answer 2

Throughout human existence atmospheric CO2 levels have never changed as fast as they are changing now. In the very brief span of time from 1700 to 1900 CO2 climbed by 10 parts per million (ppm). This rate of change could be disastrous for species which cannot migrate or adapt. In addition, over the next few centuries the result is likely to be more violent storms and flooding due to rising sea levels. Droughts and fires will be more common in some areas of the world, which will likely undergo desertification. The economic consequences of ignoring this issue are expected to be enormous.

Answer 3

The carbon dioxide, and other gases released into the atmosphere retain heat. This causes the greenhouse effect which results in the average global temperature rising.

Answer 4

The greenhouse effect is becoming a problem because levels of greenhouse gases are building up in the atmosphere. This is causing global warming and climate change.