Avoid long-term use in people who have or are at risk of lung problems, such as asthma or byssinosis (a disease caused by breathing dust). Marijuana may cause bronchitis, coughing, lung cysts, phlegm, reduced lung density, and wheezing.
Best Answer: A compound is something made up of elements (ie not one pure element). The word compound means something made of a combination of things - like a compound sentence or a military compound (made up of several buildings). Elements are the basic substances that make up the universe and cannot be broken down into different substances. Compounds are composed of two or more elements that have bonded to form one substance In short: Elements - cannot be broken down and bond to form compounds Compounds - two or more elements that have bonded to form a unique substance
But most of the things we encounter and use on a daily basis are chemical compounds. A chemical compound is a chemical combination of two or more elements that can normally be broken down into simpler substances by chemical means and have properties different form those of its component elements. Chemical compounds are formed by elements that bond together. These bonds are typically covalent, ionic, or metallic bonds. Ionic bonds are formed when two or more atoms of an element are joined together when one of the elements gains or loses electrons.