Where does secretion occur in the nephron?

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

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %