How You Start Out In Life
The very first thing you start out as is a cell. Cells can be as small a tip of lead on a pencil.
The next step is tissue. The parents will get an ultrasound to see if they are pregnant. The bright white is the tissue.
After Cells and Tissue, you have grown organs inside your little body. Organs consist of hearts, lungs, stomach, etc.
After all of the other stages, you start to get Organ Systems. These consist of Muscular, Skeletal, Digestive, Respiratory, Nervous, and your Circulatory Systems.
Finally, you are born and are considered an organism. Go brace the world and soak it in.
When leave the hospital you become part of a population with other organisms that are like you.
When you get to your house, you will most likely have a pet.(Dog, Cat, Fish, etc.) This is when you become part of a community, because you have living things but are different organisms.
When you go outside and you have trees, grass, flowers, rocks, or dirt, you are part of an ecosystem. It's you, a pet, and a non-living thing like dirt or a rock.
Last is the biosphere. The biosphere is everything on earth it's self including you. So go out and have fun with your life, while it lasts.