Which of the following should college students do to keep track of their finances?

What is the answer for the question

How did different parts of the united states feel about slavery

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.