Explanation: It is clear from the figure that the fossil Z appears to be at the top, fossil Y in the middle and fossil X at the bottom, and we know that the rocks appearing at the top is younger than the rocks that are present below. Thus it is applicable in terms of fossils too i.e the fossil Z is younger than the fossil Y.
the hormone erythroprotein increases the production of red blood cells when oxygen levels are low best supports teh statement taht hormones are involved in the regulation of homesstasis.
