Please help me with this chemistry if you can it’s due by midnight

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?