Indentifiyng species is the answer
There are man chemical and physical changes such as geno and pheno.
I am pretty sure the answer is D (combination)
The Nurse should include to the instruction is to drink a
full glass of water with each dose and at least 8 more glasses (8 ounces each)
of fluid a day or drink 3000 mL a day. . If your doctor has directed you to
drink less fluid for other medical reasons, Dosage is based on your medical
condition and response to treatment.
I cannot found the images of the microscopy anywhere. But I can explain how you can differentiate a procaryote from a eucaryote under a microscope.
The first difference between them is the size of the cell. eucaryotes are generally much bigger than procaryotes. Procaryotes are visible only at x100 objective, but eucaryotes are visible starting from the x10 zoom.
The second difference is the presence of a nucleus in eukaryotes and the absence of it in procaryotes.
The third difference is the presence of organelles in eukaryotes and the presence of a cell wall in procaryotes (only visible at electronic microscopy).