Long ago, I was a single-celled organism. Now I'm composed of millions of cells, all specialized and all working together in organized systems. And don't forget the billions of cells in the microbial ecosystem that I carry around everywhere.
Long ago, I was a single-celled organism. Now I'm composed of millions of cells, all specialized and all working together in organized systems. And don't forget the billions of cells in the microbial ecosystem that I carry around everywhere.
Long ago, I was a single-celled organism. Now I'm composed of millions of cells, all specialized and all working together in organized systems. And don't forget the billions of cells in the microbial ecosystem that I carry around everywhere.