After lava cools below the curie point, which is about atoms in iron-bearing minerals become magnetized in the direction of earth's magnetic field at that time and place.

In the analysis of hair and fiber samples, which does a compound comparison microscope allow for that a conventional compound microscope does not? a. simultaneous observation b. polarization c. fluorescence d. higher magnification

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103

The reaction q+r2=r2q is found to be first order in r2 and