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 Gas. Radon is a naturally occurring radioactive gas that comes from radium deposits in the earth's crust. If present in the soil under your home, it can get sucked into your house via the basement or crawl space.