Answer:
for 16 it is heart.
Explanation:
for 17 it is kidney to bladder
Answer: I believe the answer would be 2
Explanation:
Lava that hardens on the surface is called an extrusion. The rock layers below an extrusion are always older than the extrusion. ... There, the magma cools and hardens into a mass of igneous rock called an intrusion. An intrusion is always younger than the rock layers around and beneath it.
Composite volcanoes. Had this question on apex:)