Then answer is b. Cnidaria
Answer:
Water table aquifer. The Ogallala Aquifer (oh-guh-LAH-lah) is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States
Explanation:
B) Substitution of other materials and processes with more environmentally friendly materials and processes.
Answer:
Do you have any more information other than the photo? Such as notes?
You can get a nasty case of heart burn!