<span>Urbanization brings about excessive pollution because of the sudden boom in population within a given area. When there are a lot of people, consumption of several products and services can become excessive, hence pollution will always be the end result of this. People leave environmental foot prints because whether we like it or not, we will always be dependent on what’s present within our environment. </span>
Every man for themselves, only the strongest will survive through whatever environment they may be put in.
The populations of other species in the ecosystem would fluctuate dramatically. Thus, option "B" is correct.
<h3>What is the role of keystone species?</h3>
When an organism exists in an ecosystem in such a way that it impacts and influences in the ecosystem and has a significant effect incomparable to its number in the population,such organism is said to be a Keystone species. They are responsible for the structure and continue existence of the ecosystem. Thus their absence leads to change in the ecosystem structure.
They maintain ecosystem structure for example by suppressing the population of one species of organism. E.g if a keystone species is a predator, its continuous predation on the herbivores which graze over a particular land area maintains balance between the green plant population and nutrient cycles in the ecosystem. If the the Keystone does not exits overgrazing from the increasing population of the grazers will disrupt the energy and nutrient cycles in the ecosystem, with dramatic change in the ecosystem.
Thus, option "B" is correct.
To learn more about the ecosystem click here:
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<span>Observing the child for possible adverse effects from the medication is one of the most important things for the physician to express. This is because some children may not be able to communicate these effects, so the parents are better off looking for changes in behaviors that might signify some sort of side effect from the medication.</span>
