They will not mix because the oil does not have a chemical charge large enough to break the hydrogen bonds between the water molecules.
There is variation within the population, due to a mutation. The selection pressure is the drug. The microbes that have the advantageous gene which makes them resistant to the drug are selected for, and reproduce passing on the gene, increasing its allele frequency within the population over time. However, the microbes that do not have the advantageous gene, cannot survive and their number decreases within the popullation.
Answer:
The human central nervous system contains the brain, spinal cord, and retina. The peripheral nervous system consists of sensory neurons, clusters of neurons called ganglia, and nerves connecting them to each other and to the central nervous system.
Explanation:
Answer:
what answer choices are there?
Explanation:
person's blood group or the color of a species of bird is what i think
