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.

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

a physical change is being made.