1.) Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills.
Biogeochemical Cycling is a pathway by which chemicals circulate through the ecosystem involving both nonliving (abiotic) and living (biotic) components. Human activities can cause an imbalance in biogeochemical cycling by mining and/or by burning fossil fuel, which increases the amounts of chemical elements removed from cycling and removing within the ecosystem. Human activities interfere with the water cycling in three ways; first, they withdraw water from aquifers, second, they build roads, buildings and increase in runoffs, thirdly, they interfere with natural selection in purifying water and instead add pollution and chemicals to the water. Over enrichment caused by human activities lead to excessive oxygen reduction and bacterial growth, known as ...view middle of the document...
As for equilibrium species they are large individuals with long life spans. They are slow to mature and have few offspring’s, but are able to care for their offspring’s longer. For both opportunistic and equilibrium species growths are regulated by density-dependent factors.
3.) Compare and contrast indirect versus direct values of biodiversity, and provide examples.
Direct values of biodiversity are using animals or plants for medicine, and other products that benefit humans. There are three values to direct values of biodiversity and they are medicinal value, agricultural and consumptive use value. Indirect values of biodiversity are wide- ranging and are not easily perceptible. There are six values of indirect values of biodiversity and they are biogeochemical cycle, waste disposal, provision of fresh water, prevention of soil, regulation of climate, and ecotourism. In direct values of biodiversity humans are directly the cause of extinction to plants and animals because humans purposely use them to help them in medicine and other products to benefit humans. In indirect values of biodiversity humans indirectly affected the environment and the whole ecosystem.
4.) Describe two traits that represent a sustainable society and two traits of a non-sustainable society.
Sustainable society would be able to provide the same services and goods for future generations of humans which can be accomplished in so many different ways. Here is one way we can accomplish a sustainable society by increasing the planting of cultivars such as plants propagated vegetatively, which are resistant to blight, rust, insect damage and much more. A second way we can accomplish a sustainable society is by maintaining, restoring and protecting our wetlands from hurricanes, tsunami and from storm damage. Non-sustainable society wouldn’t be able to provide the same services and good to their future generations of humans. One trait of a non-sustainable society is our society uses nonrenewable fossil fuel energy, which leads to various pollutants entering our ecosystems. A second trait of non-sustainable society is the processing and uses of minerals are responsible for a majority of the environmental pollution.