What are the major causes of the sixth mass extinction event, and why is it of particular concern?
What will be an ideal response?
The most potent cause of sixth mass extinction event is human alteration and destruction of landscapes. In addition, the introduction of invasive exotic species is contributing to many extinctions and local extirpations of native species. Pollution from pesticides, acidity and eutrophication is causing biodiversity loss in both fresh water and marine habitats. Overharvesting, poaching and overhunting of commercially important species is causing their populations to decline to the point where many are at risk. All of these factors are worsened by the rapid growth of the human population, which directly and indirectly places stress on all natural ecosystems. Loss of biodiversity is of particular concern because the current global extinction rate is 1000 times greater than it would have been without human destruction of habitat.
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The two major divisions of Islam are ________ and ________
A) Sunni; Shi'ite B) Protestant; Catholic C) Orthodox; Reformed D) Druze; Sikh
Why does the chapter suggest that it would be easier for Oprah to give up eating hamburgers than to give up driving cars?
What will be an ideal response?
Which of the following is the most important biological measure of radiation?
A) curie B) rad C) rem D) roentgen
A measure of the total incoming or outgoing radiant energy is called _______________
Indicate whether this statement is true or false.