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.
1 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. 2  heat absorbed by the ice to warm it to 0Â°C (call it q1). 3  heat absorbed by the ice to melt it at 0Â°C (call it q2). heat absorbed by the ice to warm it to 0Â°C (call it q1). 2  heat absorbed by the ice to melt it at 0Â°C (call it q2). 3  heat absorbed by the melted ice to warm it from 0.0 to 1.0 Â°C (call it q3). 4  heat released by the water to cool it from 25.0Â°C to 1.0 Â°C (call it q4). 5  Set up an energy conservation equation.