is an ancient African location that archeologists believe was first settled in 200BC. At this location, archeologists have found examples of small figures and Islamic architecture. a. Igbo Ukwu c. Jenne b. Blombos cave d. Kongo

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.