Tadpoles use GILLS to obtain oxygen
There has to be one side with a high concentration and another side with a lower concentration
Answer:
pruney fingers are caused by shrinking blood vessels. When you soak in water, your nervous system sends a message to your blood vessels to shrink. Your body responds by sending blood away from the area, and the loss of blood volume makes your vessels thinner.
Answer:
Explanation:
...then the bird beak changes because the bird beaks are the most vital physical feature that allows birds to catch and devous its prey.
