A(n) is a substance made of only one kind of atom.

Elements are substances made from only one kind of atom. They are said to be pure because they only have the atoms of that element, and nothing else. An example is gold, which is made up of purely gold atoms, while something like salt we put on food, is a combination or compund of sodium and chlorine atoms.

The short-term effect of tar on the body is increased blood pressure.

You should provide a picture to show where the arrow is pointing and which information that is given. but there are 3 branches of the government, legislative, executive, and judicial. legislative makes laws, executives pass laws, and judicial are the courts