slide 1 of 5. A polygenic trait, is a trait that nonallelic genes control. These traits result from one or more genes contributing to the phenotype. An individual's physical appearance is determined by chromosomal inheritance and genotypic ratio. This phenomenon is known as Mendel's Laws of Inheritance.
, cycle. Water molecules continuously move from location to location in this cycle. The water cycle is important to weather and climate and, ultimately, to all life on Earth. The water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.
The entire water cycle is driven by energy. It's energy from the Sun that causes the water to evaporate in the first place. This gives the molecules their kinetic energy (or movement energy), allowing them to rise up into the air. As they rise up, they slow down and that kinetic energy turns into gravitational potential energy (or height energy). Whenever an object is raised up in the air, it gains this kind of energy, and water vapor is no exception. Ã