Many geologists follow a principle that states that the physical, chemical, and biological laws that operate today have also operated in the geologic past. This doctrine helps geologists understand the geologic past and determine the age of rocks. What is the name of this principle?

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]