Answer:
If we could see your choices, it would better help us to help you.
Explanation:
But, if you are referring to the most widely accepted theory: 
Anthropogenic (man-made) Global Warming, or AGW.  The theory states that man-made greenhouse gases, primarily carbon dioxide (CO2 ), are the predominant cause for the global warming that has occurred during the past 50 years.
 
        
             
        
        
        
Answer:
Any population in a given environment contains a variety of available, inheritable genetic traits. ... In a population, there is a cause-and-effect relationship between the variation of traits and the probability that specific organisms will be able to survive and reproduce.
Explanation:
 
        
             
        
        
        
Answer: Gene alterations in gametes
Explanation:
 
        
             
        
        
        
Answer:
The answer is 8
Explanation:
At a pH of 8, the number of duckweed plants was the highest.
 
        
             
        
        
        
Answer: the branch of science concerned with classification, especially of organisms; systematics. i think?
Explanation: