February 22, 2017

Homework Help: main ideas

Posted by bob on Friday, September 6, 2013 at 2:30pm.

Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants stays warm because sunlight and heat coming through the glass roof are mostly trapped. The heat doesn't radiate back into the atmosphere because it's partly trapped by the glass. Something like that happens on Earth. The atmosphere acts like a blanket that keeps the Sun's heat from leaking away into space. The main conclusion you can draw from this paragraph is that A. a greenhouse helps plants to grow faster.B. in a greenhouse, the Sun's heat is trapped by the glass
the atmosphere keeps Earth warm.

D. because of the greenhouse effect, plants on Earth should thrive.

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