Things around us are usually made up of combinations of elements. These combinations are called molecules. Molecules make up combinations called compounds.
Water is an example. There are 2 oxygen atoms and 1 hydrogen atom (oxygen and hydrogen are elements). Together there molecules make up H2O (water) which is a compound.
I hope this makes sense! I'm happy to answer any other questions you might have :)
That's a plant cell. you can tell because it has a flower in it.
Digestive System, Stomach, Stomach Lining, Epithelial Stomach Cells.
Pretty sure unless its reverse.
