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.
Melting won't occur until the ice has warmed up to 0Â°C, so you have to consider the heat required to warm the ice and the heat required to effect the phase change separately. After melting, you'll have water at 0Â°C, so if you want to warm it to 1Â°C you have a third amount of heat to include.