Before human-made antibiotics, Antibiotic resistant bacteria existed. A good example is a penicillin, it is produced by antibiotic which is made by mold and the mold which makes the antibiotic to kill the bacteria and the one which would compete for material that mold gets its nutrition’s from.
That’s why we can say before humans developed, there were some penicillin-resistant bacteria. Most of the non-resistant bacteria die when exposed to an antibiotic. Some bacteria may have a resistance to the antibiotic because of mutations. Natural selection is all subject to bacteria. Most of them die if they don’t have the mutation which helps them to survive.
If those bacteria are exposed to a various antibiotic, then the same process occurs and that is how most strains of bacteria comes to multi-antibiotic resistant.
Answer:
C. Monosaccharide
Explanation:
Glucose is an carbohydrate molecule with the chemical formula, C6H12O6. It is one of the simplest form of carbohydrates called MONOSACCHARIDE OR SIMPLE SUGAR. This means that it has a single ring in its chemical structure. Other monosaccharides are fructose, galactose etc.
As stated in this question, Glucose is produced as energy source during the process of photosynthesis in plants i.e. the combination of carbon dioxide (CO2) and water (H2O).
The right answer for the question that is being asked and shown above is that:
(1) <span>A. Australopithecus africanus, Homo neanderthalensis, Homo erectus
</span>(2) <span>D. Ferns and relatives
</span>(3) <span>C. Age (years)
</span>(4) <span>B. 2
</span>(5) <span>A. Distilled water
</span>(6) <span>A. possession of adaptations developed through use.
</span>(7) <span>D. A group of plants that’s subjected to two fertilizers
</span>(8) <span>B. The growth of the plants
</span>(9) <span>A. Artiodactyls
</span>(10) <span>D. Number of Fish </span>
D) Toads and mice have a competitive relationship