The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
Answer:
The model appears to show the carbon dioxide molecules entering the blood cell and the oxygen molecules existing the cell.
Answer:
A. Populations were separated through geographical isolation.
Explanation:
Im not positive but I think it's b or c
Answer:
cloning
Explanation:
one of the most controversial uses of genetic engineering has been cloning, or producing a genetically identical copy of organism. while the ethics of cloning are hotly debated, the 1st ever sheep was cloned in 1996 by scientists.
