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 Water Cycle. More than ninety percent of the Earth's water is locked beneath its surface either in crystal rocks or deep in the interior and does not take part in the water cycle. A large portion of the water that does participate in the water cycle comes from the Earth's oceans. Step 1: A large quantity of water evaporates from the surface of the ocean. Evaporation is the conversion of liquid water to a gaseous form of water called water vapor.