Answer:
The main reason airplanes fly in the stratosphere is because this is where the least amount of turbulence is found. In addition, because the stratosphere is very dry, there are fewer clouds in this layer, making for a much smoother ride overall.
Explanation:
 
        
                    
             
        
        
        
Answer:
Lake Victoria has a variety of environments such as rocky shores and muddy bottoms; this environment heterogeneity promotes speciation.
Explanation:
the diversity assists marjorly 
 
        
             
        
        
        
Answer:
C.  movement of the Earth’s plates
Explanation:
Volcanoes and earthquakes sometime occur in Canada's western ranges because of the movement of the Earth's plates. 
- Plate tectonics is responsible for the volcanic activities which brings magma to surface from the asthenosphere. 
- Also, earthquakes are products of plate tectonics. 
- The differential movement caused sudden breakage of the plate and releases are sudden burst of energy. 
 
        
                    
             
        
        
        
Answer: A.Santa Ana
Explanation:
This description perfectly agrees with the Santa Ana Winds (also called Santana Winds), which are due to a meteorological phenomenon that occurs between southern California and northern Baja California during autum and early winter (although they can also occur in the other seasons of the year). In this sense, strong winds are caused by high air pressure circulating clockwise at high altitudes in the Great Basin between Sierra Nevada and the Rocky Mountains (and the Mojave Desert).
It should be noted that these winds are characteristic of the region, which dry the vegetation, knock down electric utility poles and trees, and sometimes transport hot embers, being the main cause of fire spread.
 
        
             
        
        
        
Can’t have more than a certain amount