Which reasons are the best for using only the fine-focus knob under high power? select two. the diaphragm will not open wide enough by using the fine-focus knob. the stage or objectives move very little when the knob is turned. the objective will not move enough to risk breaking the glass slide. the coarse-focus knob will not turn when the microscope is set for high power

The 2 that you  will need to select are B and C.

B) The stage or objectives move very little when the knob is turned.

C) The objective will not move enough to risk breaking the glass slide.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.