Which statements describes a seismograph? check all that apply it has a curved graphing surface. it is used to locate an earthquakes epicenter, it uses a needle on graph paper to measure seismic wave activity, it determines the arrival time of p waves, or measures data used to find the difference between the arrival times of surface waves.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Nucleic acid certain protein cell membranes certain carbohydrates

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons