1.
living things, such as plants, animals, and bacteria
2.
the relative size of things
3.
an organism that is too small to be seen with the naked eye
4.
too small to be seen with the naked eye
5.
the tiny structures that make up all living things and are the smallest units able to perform life functions
6.
the body's use of molecules for energy and growth
7.
a group of atoms joined together in a particular way
8.
a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms
9.
a molecule that organisms get from the air or water around them and use to release energy
10.
molecules that are the building blocks of proteins
11.
a set of interacting parts forming a complex whole
12.
the body system that takes in food and breaks it down
13.
the body system that takes in oxygen and releases carbon dioxide
14.
the body system that transports molecules to and from all cells of the body
15.
the ability to make things move or change
16.
a process in which atoms rearrange to form new substances
