Answer:
The answer is a) allopatric speciation.
Explanation:
Allopatric speciation happens when a geographical or physical barrier is introduced in a population. After this, the reproductive isolation, genetic recombination and also random mutations can promote the speciation process, where at the end, there will be two separate species.
Desertification is the process where fertile land becomes a desert.
Well one way desertification could impact an environment could be by a problem called OVERGRAZING.
Overgrazing happens when goats and cattle are kept in the same area for too long which results in then eating all the vegetation. If all vegetation is eaten, it is unlikely for it to grown back. Changes in political boundaries and companies buying land means that farmers rely on the water and land around them. This means farmers don't regularly move to new fertile areas.
Water vapor condenses to form clouds , water falls as rain, snow, and sleet, water joins streams or forms ground water , water flows down mountains and hills
<span>Traction
The question pretty much defines the term "traction" as used in orthopedic medicine. There are two main types of traction, skin traction and skeletal traction. If traction is used, it is generally used in conjunction with some other form of treatment.</span>
B) Bacteria can be treated with antibiotics, viruses cannot.
Antibiotics have no target when dealing with viruses. Antibiotics work on bacteria because it targets the growth machinery in bacteria. Viruses are found inside a human cell and reproduce by inserting their DNA into a human cell. There are antivirals and vaccines out there for viruses. Our body’s immune system fights against viruses with antibodies!
