Animals, including humans, almost universally consume organic material, breathe oxygen, and develop from a hollow sphere of cells called the blastula.
Animal Diversity: Sponges, Chordates, Vertebrates, Blastulation, Food Chain
Animal Diversity: Sponges, Chordates…
Animal Diversity: Sponges, Chordates, Vertebrates, Blastulation, Food Chain
Animals, including humans, almost universally consume organic material, breathe oxygen, and develop from a hollow sphere of cells called the blastula.