I believe it was
D, the light microscope !
Hope this helps! :)
I believe the correct answer is D) higher elevation. The higher elevation, the lower temperature - that is why a mountain is covered with snow.
Kinins are always present in an individual's blood. however, in the absence of infection, it is in an inactive form. The kinins are polypeptides that as blood components generate various mediators and many<span> cardinal manifestations of </span>inflammation.