Jeez this is middle school really. covalently bond
Evaporation is a physical phenomenon, as with the action of sunlight, the atoms that make up water (H2O) will stick to a greater state of agitation, causing their separation and subsequent evaporation. In more pressure, more energy would be required (heat, sunlight) to cause the separation. There is no change in the properties of the element, and the process is reversible.
hope his helps!.
I would say letter D.
A is biology.
Ecology has to do with distribution of animals.
