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.
All homes have some level of radon - the only way to know how much is to test. Radon is a radioactive gas found naturally in the environment. It is produced by the decay of uranium found in soil, rock or water. Radon is invisible, odourless and tasteless and emits ionizing radiation. As a gas, radon can move freely through the soil enabling it to escape to the atmosphere or seep into buildings.