Question

your body is made up of over 30 trillion cells. but you didnt start out that way. all humans begin as a single cell! that first cell grows and divides to form more cells. a human begins as a single fertilized egg cell known as a zygote. a teenage human is made of trillions of cells. as the human body grows and develops, cells become specialized to do different jobs. these different types of cells are the building blocks of the organ systems that keep us alive. complete the paragraph. humans start out as a single cell. as humans develop, they form more cells. cells specialize to perform jobs in the body. different the same

Explanation:

The text states that humans start as a single - celled zygote and then divide to form more cells. As development occurs, cells become specialized to perform different functions in the body's organ systems.

Answer:

Humans start out as a single cell. As humans develop, they form more cells. Cells specialize to perform different jobs in the body.