Which of the following Is placing stress on the endangered Ganges River dolphin?

Question

Which of the following Is placing stress on the endangered Ganges River dolphin? poaching for the pet trade invasive marine dolphins pollution and competition for fish from fishermen local people killing them for food The greatest biodiversity would be in an ecosystem with the same number of species as other ecosystems but which has a single dominant species several dominant species in intense competition with each other no dominant species more consumers species than producer species Protection of biodiversity around the world requires changes to social structure and political organizations that drive basic science basic science to guide public policies and laws that then must be enforced new technologies and techniques that are still being developed the introduction of new species into new regions to spread a species range Only about 10 species have recovered significantly enough to be removed from the Endangered Species List. Recovery to this extent is limited because hunting of protected species often continues even after the organisms are listed populations are already low and at high risk by the time they are listed protecting the habitat of an endangered species is not as critical as once assumed the regulations protecting the species do not extend to private landowners In 1968. Garret Hardin described an environmental problem In which shared environmental resources may be depleted as individuals maximize their gains by disproportionately using the resource He called this "The Tragedy of the Commons. * Which of the following threats to biodiversity best reflect this "Tragedy of the Commons"? the appearance of many deformed frogs from overuse of herbicides the decline of fish populations due to overexploitation the accidental introduction of invasive species into North America the fragmentation of natural habitat to build bridges and highways The primary habitat of the river dolphin Is subject to periodic fires and drought also inhabited by many other fresh water dolphin species uninhabited by humans the Sundarbans, the world's largest mangrove forest The ability of scientists to understand the natural relationships between organisms and their environments depends upon the instrumental value of the natural resources In the region availability and preservation of undisturbed regions In the world development of bioengineered organisms institutional value of the organisms in the ecosystem

Explanation / Answer

1)Local people killing them for their food(d).

2)No dominant species(c).

3)Basic science to guide public policies and laws that then must be enforced.(b).

4)Populations are already low and at high risk by time they are listed.(b).

5)The decline of fish population due to over exploitation.(b).

6)Uninhabitated by humans (c).

7)Availability and preservation of un disturbed regions in the world.(b).

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