Answer:
Petroleum and other fossil fuels will most likely increase in price because they will be scarce in quantities since more and more people are using them to power their cars and other machines.
Explanation:
Answer:
fish and tetrapods are both vertebrates that have a backbone with a spinal cord. fish lived before tetrapods because their fossils are in rocks over 500 million years old.
Explanation:
fish and tetrapods are both vertebrates that have a backbone with a spinal cord
Melanin conveys some UV protection
