Which statement explains why greenhouse gases are needed for the survival of life on earth? a. greenhouse gases are clean sources of energy. b. without greenhouse gases, earth would be too cold for life to exist. c. inhaling greenhouse gases is essential for proper lung function. d. greenhouse gases prevent celestial objects from entering earth's atmosphere.

((ᵔᴥᵔ)}[ select all that apply questions! ]{(ᵔᴥᵔ)(1.) which of the following causes of the french government's financial crisis spark the revolution? select all that apply.a.the extravagant spending by the courtb. the cost of the seven years' warc. the expenses of running the bastilled. the cost of aid given to finance the american revolution(2.) despite naming himself emperor, why was napoleon pivotal as a french revolutionary? select all that apply.a. he fostered revolts during his reign.b. he frightened the monarchs of europe with the idea of representative governments.c. he established democracies throughout his empire.d. he established republics that embodied the ideas of the revolution.e. his declaration fueled the ire of the revolutionaries to rise up against him.(｡◕‿‿◕｡)