<span>Answer B
A decrease in the intensity of the light would interrupt THE EMISSION of energy which would reduce the electrons diminish its brightness, which the emission of electrons by a material when it impinges on him an electromagnetic radiation (visible or ultraviolet light, generally included in the term other types of interaction between light and matter and leads to reduction</span>
A drug that interacts directly with receptor sites to cause the same activity that a natural chemical would cause at that site is the instructors best response.
Explanation:
Receptors are Macromolecules which involved in chemical signalling within cells. It is possible that receptors are located in the cell surface membrane. Cellular biochemical process is regulated by Activated receptor. The drugs are capable to affect to receptor who is related to the drug’s affinity and also intrinsic efficacy.
The affinity and activity of drug is related to its chemical structure. its effect is decided by the time duration where complex persistence of drug-receptor.
The answer is C because it’s something that can be caused by speciation, not can cause it
