The totality of our surroundings that includes plants, humans, and animals is known as the ...

The totality of our surroundings that includes plants, humans, and animals is known as the __________.
 Fill in the blank(s) with correct word

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Health risks associated with ozone include all of the following except:
 a. decreased immune function.
  b. an increase in lung infections.
  c. increased susceptibility to pathogens.
  d. heart disease.

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Environmental racism refers to:
 a. blaming people of color for the environmental problems of today.
  b. excluding people of color from proper treatment for the NIMBY syndrome.
  c. causing people of color to be afflicted with the NIMBY syndrome.
  d. having a disproportionate placement of waste sites in neighborhoods populated by people of color.

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Global warming is responsible for which of the following?
 a. lowering sea levels due to water evaporation
  b. changes in rainfall patterns leading to more droughts and flooding
  c. decreased potential for tropical diseases
  d. all of these choices

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The average global temperature rose how much during the twentieth century?
 a. 1F
  b. 2F
  c. 1C
  d. 2C