Imagine two new volcanic islands spring up in the middle of the ocean. Each island is quickly founded by a few individuals of a
species of aquatic bird that requires fresh water to thrive. The two islands differ in rainfall, one wetter and one drier. Assuming that rainfall determines carrying capacity for these birds, and that rainfall is consistent over time, what might the growth curves for the bird populations look like over many years for the two islands
<em>The correct answer is the option on the upper right .</em>
Aquatic birds that require fresh water to thrive need to be around a source of fresh water. The wetter island has more fresh water than the drier island. This means that both island will be occupied from a population of zero, to an optimum stable population, which is indicated as the graph moves from zero to its maximum point, and then levels out. Th drier island will have the same pattern of curve, but will only be able to support a much smaller population, which is why the curve for the drier island is less than that of the wetter region.
The example of a scientist studying Darwin's ideas is that of archaeologists uncover, catalog, and compare fossils of marine life. Darwin's ideas stated that the traits that favor the survival of a species are passed on by natural selection. Natural selection puts environmental pressures on the species, such as predators, which removes the less suited genes from the gene pool. An archaeologist will study this as he or she will observe the changes that will have taken place in the species over time.<span />
Nucleoid occlusion, NO, is a mechanism in which the nucleoid prevents the the division of the chromosome in the cell's cylindrical part before segregation of the chromosome around the middle of the cell
NO is achieved by not allowing the formation of Z ring formation close to the nucleoid, (before the chromosome is segregated) thereby aiding the specification of the septation location
Therefore, the Z ring is formed after the chromosome is segregated
The chemical sedimentary rocks form when the parent material weathers into a sediment. The sediment includes chemical inorganic minerals and partially or completely degraded organic matter that comes from the remains of plants and animals. The layers of sediments get compacted with overlying heat and pressure which leads to the formation of chemical sedimentary rocks.