I was recently discussing with someone the possibility of the government installing a cap-and-trade system on American companies to reduce greenhouse gas emissions. I said that would be a baby step in the right direction, however I think we need a stricter solution, such as the development and eventually mandated uses of alternative energy (solar power, wind and tide energy, for example) instead. However, I was wondering if this is even applicable to the topic at hand? What processes exactly do happen within companies to emit so much greenhouse gas? And, could alternative energy even be substituted for the original methods of production?

So I have this mini greenhouse in my room, I live in the city in the apartment, so I can't really grow anything. The mini greenhouse can grow marigold, using artificial soil, the size of the greenhouse is 9 x 6.5 x 6.5-inches. What other nice beautiful flowering plants can I grow in there?

Both volcanoes and humans emit greenhouse gases, which contributes the most to global warming and by a factor of approx how many. For example, “humans contribute twice as much as volcanoes” or “volcanoes contribute three times as much as humans”. Thanks to everyone who answered. Linlyons answers is spot on - detailed, accurate, factual and back up with a credible source. To Mr Me and others who make similar comments - humans have produced 3.2 trillion tons of greenhouse gases, if this was solid volcanic material it would be a block 2000 cubic kilometres in size, enough to make a mountain larger than Everest. The reason I asked this question in the first place is because the claims made by some skeptics in relation to volcanoes get progressively more extreme and the same claim is rarely made twice, I get the impression some skeptics are just writing the first thing that comes to mind.

Bio homework help. What effect would green glass of a greenhouse have on the plants and the process of photosynthesis. I know green light is what's reflected but i'm still confused on what would happen...