Lead.
It is also in older paints.
The densest element found on Earth is osmium.
The main element in coal is carbon.
Carbon is the element found in coal and soot.
The answer expected is probably "phosphorus", but it should be noted that the chemical form in which it is found in the soil is not poisonous.
Beryllium is the element found in the mineral compound beryl.
The element is found in your teeth is Calcium.
The human body naturally contains iron in the bloodstream. However, too much of it in the bloodstream can be harmful to you. However, naturally-found iron is not otxic or harmful in any way, unless taken internally. Hope this helped.
No, algae are not harmful unless it dies. (Found this answer on Yahoo.com)
The element silver was found in the 700 bc.
The densest element found on Earth is osmium.
The main element in coal is carbon.
This element is calcium.
Element.
Element
O3 is the gas mentioned above. It is the gas which protects us from harmful UVB rays in the Stratosphere. But when found closer can be harmful.
Carbon is the element found in coal and soot.
Americium is a radioactive element found in nuclear waste. It can pose a health risk if ingested or inhaled, as it accumulates in bones and can increase the risk of cancer. Exposure to high levels of americium can cause radiation sickness and potentially be fatal.