Which structure produces cells that have the potential to become gametes?

What advantages does a pedigree have over a written passage?

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping