Many naturally occurring environmental exposures increase risk for cancer. residents in many parts of north america are exposed to low levels of the radioactive gas in their homes, particularly in homes with basements.

Radon

Explanation:

 The radon is one of the type of chemical element with the atomic number 86 and the symbol of the radon is "Rn".

The radon is the radioactive gas and it occur due the breakdown of uranium naturally in the rock, water and the soil form so that it comes into the air where we can breathe.

The main characteristics of the radon radioactive element are as follows:

The radon radioactive gas is usually found in the homes, workplaces and also in the indoor environment. This type of as is very harmful for the human lungs.

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "