The tumbleweed dispersal strategies are unusual among plants; most species disperse their seeds by other mechanisms. Many tumbleweeds (though by no means all) are ruderal species, opportunistic agricultural weeds. Tumbleweeds have been recorded in the following plant families:
The most obvious is temperature. If the air temperature is above 32Â°F snow and ice will start to melt, at or below 32Â° and it will remain frozen. Think about a popsicleâ¦ inside the freezer it stays frozen, outside it starts to melt. The amount of sunshine plays a big factor.
To get the kind of melting I am assuming you are talking about it just has to be above 0 degrees. So it could be 0.01. However, this does not mean that the snow and ice will melt rapidly, and at temperature just above 0 C it might seem like there is little to no melting occurring, because it is happening so slowly. The biggest difference between snow and ice is just density.