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Politics : The Trump Presidency -- Ignore unavailable to you. Want to Upgrade?

To: TimF who wrote (67470)	4/18/2018 5:19:21 PM
From: combjelly	Read Replies (1) \| Respond to of 364735

Straw man, Tim. I mentioned land plants for a reason. They are a lot more effective at sequestering carbon. As I noted, in fact. So what you have in quotes is totally bogus and not at all related to my posts. During all of these high CO2 periods you had temperatures much higher than today Well duh, Tim. and also temperatures colder than what prevailed in the last ice age. Are you talking about Snowball Earth? There were several factors at play. One, was the reduction in CO2 concentration due to the photosynthetic activity of plants and bacteria. Remember that the bacteria were using rhodopsin for photosynthesis, which is why chlorophyll is green. Regardless, the CO2 concentration in the atmosphere was being reduced. That, combined with the lower insolation because the Sun was so young, the temperatures dropped, snowfall increased and the albedo went up. And things stayed frozen until the CO2 levels rebounded because of reduced photosynthesis and the temperatures went up again, melting the ice and, well you know. As the Sun grew hotter, this cycle stopped.