The world's dependence on fossil fuels has increased because of subsidies and tax breaks that support fossil-fuel processing industries.

What results from burning tropical forests? 

A)  increased biodiversity 
B)  more greenhouse gases added to the atmosphere 
C)  large areas of regenerated forests 
D)  increased ecological integrity

Which matter is broken down by biological action? 

A)  uranium 
B)  plastic toys 
C)  litter in the environment 
D)  lead and mercury

Which industry did the Clayoquot Sound,BC,resource management conflict focus on? 

A)  agriculture 
B)  forestry 
C)  fishing 
D)  diamond mining

Which statement best represents the current situation with urban growth in developing countries? 

A)  It is helping to eliminate urban poverty. 
B)  It is generally offset by migration to rural areas. 
C)  It is caused by both migration and natural increase. 
D)  It is generally declining over the few decades.

Plants utilize a portion of their gross primary production (GPP)for respiration.