Radioactive phosphate (32PO4) was applied to a plot of natural grassland. During the next 35 days, samples of four species of arthropod were investigated for radioactive content. The graph shows the relative amounts of radioactivity found in the four species, W, X, Y and Z.

Radioactive phosphate (32PO4) was applied to a plot of natural grassla

1.	Radioactive phosphate (32PO4) was applied to a plot of natural grassland. During the next 35 days, samples of four species of arthropod were investigated for radioactive content. The graph shows the relative amounts of radioactivity found in the four species, W, X, Y and Z.
Answer» Radioactive phosphate $(^{32} P O_{4})$ was applied to a plot of natural grassland. During the next 35 days, samples of four species of arthropod were investigated for radioactive content. The graph shows the relative amounts of radioactivity found in the four species, W, X, Y and Z.