When rocks in the seafloor form, they can contain a record of the strength and direction (polarity) of the Earth's magnetic field. The diagram below shows this data from rocks on both sides of a mid-ocean ridge. chart of magnetic field strength and direction, roughly symmetrical about the mid-ocean ridge Modified from image courtesy of USGS Which statement best interprets this data?

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

straight probes are used primarily for measuring flow as it is approaching the test area. its geometry allows the probe to be mounted so that it is in the direct line of airflow.