Answer:
A gas-powered lawn mower is a complex machine because for it to function it does more than one motion. For example, it has a wheel and axle system so it can move when powered. And it has a system of simple machines and other parts that are put together to accomplish the task of cutting grass.
Explanation:
 
        
                    
             
        
        
        
I would say the second answers, growth. This is because we need the nutrients and vitamins from food to help us grow, and keep us healthy.
        
             
        
        
        
C- has a heterozygous genotype
They are genotypes (represents genes)
        
             
        
        
        
It is also known as 'The Great Bear'