Nutrients are recycled, but energy is not.
Vertebrates developed about 550 million years ago. The oldest vertebrate fossils are those of FISH with no jaws. These e<span>arly jawless fish did not have paired fins and their bodies were covered with heavy, bony scaled, but their skeletons were made of cartilage. For the next 50 million years, they were the only vertebrates.</span>
Answer: 8- D
9- C
Explanation: always remember the number above is the atomic number
They will most likely decide to eliminate using grocery bags period.