Threats to Biodiversity

What are the three greatest proximate threats to biodiversity?

Which of the following is a major cause of extinction mentioned in the text?

What is the consequence of human population needs for energy according to the text?

What do carbon dioxide levels fluctuate between historically?

Which environmental issue has specific targeted effects on species but is not seen as a major threat to biodiversity in the text?

What is predicted to become even more significant in this century according to the text?

What has caused a dramatic increase in carbon dioxide levels in the Earth's atmosphere?

Which organization certifies sustainably harvested forest products to prevent habitat destruction?

What percentage of global forest cover was estimated to be lost from 2000 to 2005, with most loss occurring in the tropics due to timber extraction?

What is one of the main uses of palm oil, leading to deforestation in areas like Borneo and Sumatra?

What does the text suggest is a significant impact of adding greenhouse gases to the Earth's atmosphere?

Why is habitat loss particularly threatening to species other than humans?

How has human destruction of habitat accelerated in the latter half of the twentieth century?

What is the purpose of pumping water into tanks on a ship from the port of origin?

Which species was introduced to the Great Lakes from Europe in ballast water?

What has been the impact of zebra mussels on the Great Lakes?

What has been the ecological impact of zebra mussels on the Great Lakes?

Which disease organism is linked to the global decline in amphibian species?

How was the fungus Geomyces destructans, responsible for white-nose syndrome in bats, likely introduced to North America?

What term is used for wild animals killed for food?

What has led to the decline in population size of pangolins?

What characteristic makes exotic species especially successful in new ecosystems?

Which region is believed to threaten several species with extinction through hunting practices?

What has increased the introduction of species into new ecosystems?

What makes islands particularly vulnerable to extinction threats from introduced species?

What type of water has led to many introductions of aquatic species?

Which action is necessary to prevent the brown tree snake from spreading to other islands from Guam?

' What' term is used for a species introduced into an ecosystem in which it did not evolve?

Which practice has led to bush meat being available in grocery stores and increased harvest rates to unsustainable levels?

What factor contributes to whether a wood product will be certified by the FSC?

Why is habitat destruction concerning beyond forests?

What percentage of riverways in the United States have been modified with damming or stream bank modification?

Why are species of amphibians that depend on both aquatic and terrestrial habitats at greater risk?

What is a significant threat to many species, especially aquatic ones?

What economic concept contributes to overexploitation of common resources like fisheries?

What technological advancement can enable fishers to overfish a fishery?

Why did the western Atlantic cod fishery collapse?

What is the likely cause of the present warming trend according to scientists?

How will climate change affect habitats according to the text?

Why are polar bears and grizzly bears encountering each other more frequently?

What has been observed as a result of changing climates and shifts in resources?

How has the range of European bird species shifted according to a study mentioned in the text?

What is recognized as a serious threat to polar bear populations due to accelerated warming observed in the arctic?

What can be inferred from the series of photos showing Grinnell Glacier's retreat?

What is the impact of glacier loss on local ecosystems?

What will be an effect of raising ocean levels due to global warming?

How will the gradual melting and refreezing cycle alteration affect freshwater sources?