YRF Overcrowded trees are under competitive stress from their neighbors. Thinning may be done to increase the resistance of the stand to environmental stress such as drought, insect infestation or extreme temperature.
Rising global temperatures are expected to cause greater evaporation of water vapor into the atmosphere, primarily from the oceans. On one hand, we know that water vapor is a powerful greenhouse gas, so an increase in water vapor might be expected to produce yet more warming through an enhanced greenhouse effect.lobal warming accelerates evaporation, placing more water vapor in the air. More water vapor generates a a stronger greenhouse effect, since water vapor is a greenhouse gas. However, it may also lead to the formation of more clouds, which might help cool the planet by increasing Earth's albedo.
Water existing as a gas is called water vapor, water as a liquid we generally just refer to as water, and water as a solid is called ice. The changes from a solid to liquid to a gas or a gas to a liquid to a solid are called phase changes.When substances such as water change phase, its physical properties change, but not its chemical properties (water is always H 2 0 - 2 hydrogen atoms and 1 oxygen atom).olid to Gas: When water changes from a solid (ice) to a gas (water vapor) it goes through the process of sublimation. Liquid to Gas: When water changes from liquid water to water vapor (has) it goes through the process of evaporation.