I think it's true, if I'm wrong I'm sorry.
Disconformities, nonconformities and angular unconformities
Answer:
All the red birds in an area
Explanation: population is just the amount of people in an area. For example, Santa Maria has a populaton of 2,000 people. That means there are 2,000 people in Santa Maria

LOWA is the state which is bordered by the Mississippi River on the east , the Missouri River and the Big Sioux River on the western side .
HOPE IT HELPS YOU.
Here's a few: Gold, Titanium, Zicronium, Cement, and Soda Ash.