The ridge of a birds breastbone is called a keel
Answer:
chlorophyll is the answer
- How do the organisms get energy from the deep-sea vents?
- How are the organisms able to live under the water pressure?
- Are the organisms mostly producers or consumers?
Insulin is released into the blood when oxygen levels are low and blood glucose levels are high
What he did was say that evolution happened that over time the birds seemed to be changing
