By predicting bad weather and keeping people safe during danger
Btw, i think you meant meteorologists. 
 
        
             
        
        
        
Charles Darwin noticed that among the same species there were variations in traits based upon geographical location. These changes may have evolved from climate differences, predator/prey relationships and food sources. This particular experiment was intended to duplicate natural selection by demonstrating the concepts with artificial selection. The result was that over time, new traits could be bred for. Although there may be more than one correct answer here, the best answer is the first; desirable traits can be selected and bred in offspring.
        
             
        
        
        
Answer:
The lowest region of the atmosphere
Explanation:
What google says:
the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.
 
        
                    
             
        
        
        
Answer:
Well it only makes sense that he meant that since humans use the oceans for so much once they are gone, humans will die not too long after
Explanation:
 
        
             
        
        
        
Answer:
A -  Chloroplast (although the arrow looks like it is pointed at the Thylakoid membrane) 
B - Vacuole
C - Cell wall
D - Smooth Endoplasmic Reticulum (top) and Rough Endoplasmic Reticulum    (down below)
Explanation: