A pound is approximately 0. 45 kilogram. A person weighs 87 kilograms. What is the person’s weight, in pounds, when expressed to the correct number of significant figures?.

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.