Id say D, that responses may include the spinal cord but not the brain.
Renewable resources: nonrenewable resources:
Oxygen Fossil Fuels
Fresh Water Oil
Solar Energy Natural Gas
Biomass Coal
*These aren't the only nonrenewable and renewable resources, they are just some examples* Hope this helps :)
Awnser:
Arteries
Explanation:
Arteries have a higher amount of elastin than veins. Thus, veins have a higher ratio of collagen to elastin thsn do arteries