Charles Darwin noticed that among the same species there were variations in traits based upon geographical location. These changes may have evolved from climate differences, predator/prey relationships and food sources. This particular experiment was intended to duplicate natural selection by demonstrating the concepts with artificial selection. The result was that over time, new traits could be bred for. Although there may be more than one correct answer here, the best answer is the first; desirable traits can be selected and bred in offspring.
Answer:
Ischemia
Explanation: Ischemia is the insufficient flow of blood to the brain. It leads to poor oxygen supply and thus causes death of brain tissue or ischemic stroke. It is caused by the problems with blood vessels. The Changes to the small blood vessels in the brain known as microvascular ischemic disease damage the tissue that contains nerve fibers and serves as connection point to other parts of the brain. Body weakness, confusion, loss of sensation, dizziness are some of the symptoms.
Answer:
Through natural selection the disease gain immunity to the antibiotic.
Explanation:
As the antibiotic kills off the members of the population that are not resistant, leaving only the resistant members. These members then reproduce, passing the immunity to their offspring, causing the population to become immune.
The storage areas are called : Reservoirs Reservoirs can both be made by nature or crafted by men. In order to make our lives became easier , we could create our own reservioir by digging up an open land to form a space that could contain water when its raining, as a back up resources when the lake or rivers are drying up
