Answer:
chemicals are dumped into lakes and rivers
Explanation:
all the other choices are results of cutting down trees
 
        
                    
             
        
        
        
they deleted my link but if u google this theres a pdf that should help
 
        
             
        
        
        
Answer:
A Gene pool is best described as, all the alleles present in an population. 
Explanation:
 
        
             
        
        
        
Answer:
Globally, the primary sources of greenhouse gas emissions are electricity and heat (31%), agriculture (11%), transportation (15%), forestry (6%) and manufacturing (12%). Energy production of all types accounts for 72 percent of all emissions.
 
        
             
        
        
        
The scientists' conclusions are most likely unreliable because <u>he asked the wrong set of people for his survey.</u> By definition, environmentalists are those people who are inclined to believing that humans are entirely responsible for creating biological foot prints all over the Earth. They always advocate the protection of the environment and even persuade people to follow suit. It is natural for them to react in such a manner that they find dams as something harmful because to them, dams destroy the natural cycle of Mother Earth.