Sweet Potatoes, often called âyamsâ, are a dicot (a plant having two embryonic seed leaves) and are from the Convolvulacea or morning glory family.Yams. Yams are closely related to lilies and grasses. Native to Africa and Asia, yams vary in size from that of a small potato to a record 130 pounds (as of 1999).ams are a monocot (a plant having one embryonic seed leaf) and from the Dioscoreaceae or Yam family. Yams. Yams are closely related to lilies and grasses. Native to Africa and Asia, yams vary in size from that of a small potato to a record 130 pounds (as of 1999).
A: Radon is an odorless radioactive gas that results from the breakdown of uranium. Uranium is present in most of the soil and rock around the world. It is typically concentrated in areas with lots of granite, shale, phosphate and pitchblende.: Because radon is a gas, it can leak into your house through the basement or crawl space--via adjacent or exposed soil and rock--or through well water.
RADON ENTRY. Radon gas is constantly released by each soil granule into soil air. 1  Once in the home, radon gas is diluted somewhat by fresh air that is also naturally pulled in around windows and doors. 2  The radon gas is then distributed through the home by heating/cooling blower activity or simple mixing of air.Simple soil is the most common source yet radon gas can also result from certain crushed stones, stone formations or other sources under a home that allow radon gas to move freely.ir pressures within the home pull soil air (containing radon gas) from below the foundation into living spaces. This results naturally as warm air rising upward in a home creates a somewhat consistent vacuum in the lower regions.