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 is an alpha emitter that comes from the radioactive decay of naturally occurring minerals in rocks and soil. The gas seeps out of the ground and is quickly diluted in the air. Interactive pie-chart Here showing background radiation from radon.ow much radon there is in your house depends on how easily radon can come up through cracks in the floor and how easily it can escape. Some rocks produce more radon than others. Granite produces lots of radon.