It is because that's a place where no one lives so they're safe.
        
             
        
        
        
Answer:
A
Explanation:
The hypothalamus is a portion of the brain particularly concerned with homeostasis; it influences the action of the medulla oblongata, a lower part of the brain, the autonomic nervous system, and the pituitary gland.
 
        
             
        
        
        
Because the environment is faster then the squrrel has to find stuff for the nest and a safe spot
        
                    
             
        
        
        
Explanation:
the action or process of fertilizing an egg involving male and female gamete to form zygote is fertilization. fertilization result in zygote.
hope it helps.
 
        
             
        
        
        
Answer:
As well as producing hormones, vaccines and other drugs genetic engineering has the potential to cure genetic diseases through gene therapy. The same techniques that are used to produce drugs can also have industrial applications such as producing enzymes for laundry detergent, cheeses and other products.
Explanation: