I believe it is the retina that changes shape to focus on distant objects.
Answer:
Cells are so little, so they can maximize their ratio of surface area to volume.
Explanation:
Smaller cells have a higher ratio which allows more molecules and ions to move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.
Is when you breathe in oxygen and exhale carbon dioxide
Answer:
There is a 50% chance their child will have blue eyes.
Serrated Knife?? i’m not sure if this is right