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Thank you very much, it makes a lot of sense

Umm... for the representative activity, how do you signs to show feedback? i know what it is but i dont know what it means in drawing + or - signs. any examples?

What is a volcano's effect on the climate mainly based on?

[hide]70 years from 1645 to 1715[/hide] erg how do i do this

Good job your turn.

What drives thermohaline circulation and how does the water return to the equator?

Not sure how to hide this but... 22.1 to 24.5 over a 41000 year cycle called obliquity and is a factor if the milankovitch cycles.

A pulley has an AMA of 4, it is used to lift up a 100 N block. How much force will someone have to exert to lift it.