A Trombe wall (Trombe rhymes with prom, by the way) is a wall that warms trapped air, and then circulates it to help heat a house. Trombe walls are ideally made out of a material with a fairly high thermal mass materials (like bricks or concrete), and are often painted black to improve heat conduction
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I think the answer is D: Infrographic that shows carbon moving through ecosystems
They all belong to more than one food chain except the frog. The insect is the prey for many food chains, and the snake is widely at the top...
