well im doing a group presentation and i cant find the answer. well if you can help me thank VERY MUCH
2007-06-12 19:11:41 · 5 answers · asked by gurly girl 1 in Science & Mathematics ➔ Other - Science
<>Permafrost is the level at which the ground remains frozen year round in extreme cold regions, such as sub-arctic or tundra. Growing seasons must be adjusted in order to ensure germination and growth occurs when the frost level is at its lowest point (furthest underground) or the crops will be lost.
2007-06-12 19:24:43 · answer #1 · answered by druid 7 · 1⤊ 0⤋
Seems like a trick question, I guess if you consider that something that is already a liquid cannot "melt" again then you'd think in terms of underground water sources or if you want to think more globally then the motlen iron in the mantle which provides heat for planet
or if you think a little more locally then you could be considering things like salts/minerals. Stuff like nitrates, sulphates etc...
2007-06-12 21:45:55 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Are you referring to permafrost? if so that is only found in arctic and subartic regions. in temperate regions there is no permafrost.
2007-06-12 19:49:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
dirt doesnt melt- and it is a great medium to grow plants in- or it can be water underground - and plants need it to grow-
2007-06-12 19:15:31 · answer #4 · answered by Debby B 6 · 0⤊ 1⤋
I think you are referring to permafrost.
2007-06-12 19:14:37 · answer #5 · answered by Northstar 7 · 1⤊ 0⤋