Crossword Puzzle CELLS, ORGANS, TISSUES SYSTEMSOnline version THIS IS ABOUT THE LEVELS OF ORGANIZATION OF CELLS IN THE HUMAN BODY. by marisol sanmiguel flores 1 Different populations living in the same area. 2 This level is formed by several organs doing a specific function. 3 These organisms are the first living things on Earth. 4 All the organs of the human body are made up of 5 Bones are 6 All the tissues of the human body are made up of 7 It´s the basic unit of the human body 8 It's the smallest particle of an element. 9 It's composed by many individuals of the same species. 10 They are formed when atoms of different elements join to make the molecules of life. 11 The region on, above, and below the Earth's surface where life exists. 4 6 7 1 10 5 3 2 9 11 8