The answer is D. Each element is made up of different types of atoms.
An element is made up of one type of atom. The type of atom it is made from depends on the amount of protons in an atom.
gas is more available and easy to get???
Skylab was the first space station.
C experimentation. For a scientist, assessing the validity of information requires experimentation.
The anthers, stamen and ovules are all involved. The pistil is the female sex organs and the anther and filaments are the males.