Carbon dioxide concentrations are increasing in the atmosphere. Explain how this can lead to either a positive feedback loop (whereby carbon dioxide concentrations continue to increase) or a negative feedback loop (whereby carbon concentrations begin to decrease). Be specific in describing the steps of the feedback loop, and be sure to indicate whether it is a positive or negative loop.
Carbon dioxide concentrations are increasing in the atmosphere. Explain how this can lead to either a positive feedback loop (whereby carbon dioxide concentrations continue to increase) or a negative feedback loop (whereby carbon concentrations begin to decrease). Be specific in describing the steps of the feedback loop, and be sure to indicate whether it is a positive or negative loop.
Describe each of the following approaches to conservation biology: function-first approach, evolution-first approach, and hotspot approach. Use the internet to find two specific examples of protected areas, and indicate which approach to conservation biology was taken. Your examples must include at least two of the three approaches, and they should not be examples that were discussed within the readings or class. Include a hyperlink to each of the protected areas you find.
Describe each of the following approaches to conservation biology: function-first approach, evolution-first approach, and hotspot approach. Use the internet to find two specific examples of protected areas, and indicate which approach to conservation biology was taken. Your examples must include at least two of the three approaches, and they should not be examples that were discussed within the readings or class. Include a hyperlink to each of the protected areas you find.
Two non-native species of bees are introduced into a new ecosystem. One species has a broad ecological niche, while the other has a narrow, specialized niche. Explain which species is most likely to be successful in the new environment. Also, provide one additional characteristic of this species that would make it a good invader in a new habitat.
Two non-native species of bees are introduced into a new ecosystem. One species has a broad ecological niche, while the other has a narrow, specialized niche. Explain which species is most likely to be successful in the new environment. Also, provide one additional characteristic of this species that would make it a good invader in a new habitat.
Explain the effect that increasing temperatures may have on the incidence of a tropical disease such as malaria as well as a temperate disease such as Lyme. Be specific in explaining your rationale.
Explain the effect that increasing temperatures may have on the incidence of a tropical disease such as malaria as well as a temperate disease such as Lyme. Be specific in explaining your rationale.
Describe two reasons why a captive breeding program to reintroduce South China tigers into their natural environment may fail.
Describe two reasons why a captive breeding program to reintroduce South China tigers into their natural environment may fail.
Explain how eutrophication leads to a decrease in oxygen in a body of water.
Explain how eutrophication leads to a decrease in oxygen in a body of water.
Explain how a food web would change if all decomposers were eliminated from it.
Explain how a food web would change if all decomposers were eliminated from it.
Predict why the large-scale removal of sharks from the oceans has caused some coral reefs to become overgrown with algae, even though sharks don’t eat algae. Make sure to mention whether this is an example of top-down or bottom-up control of the ecosystem.
Predict why the large-scale removal of sharks from the oceans has caused some coral reefs to become overgrown with algae, even though sharks don’t eat algae. Make sure to mention whether this is an example of top-down or bottom-up control of the ecosystem.
Describe two differences between the grassland community and the marine community.
Describe two differences between the grassland community and the marine community.
