Ultraviolet or all wavelengths
        
                    
             
        
        
        
Answer:
B. very high genetic variation
Explanation:
Selective breeding is the process by which crops or animals with desired phenotypic traits are chosen to produce offspring, which will contain the desired qualities. In this case, a group of scientists is trying to apply the principles of selective breeding to develop a particular crop plant. 
This goal of producing a useful crop plant by the scientists can only be achieved when the plant species in question possess a HIGH GENETIC VARIATION i.e. difference in genetic constitution of individuals of the same species. This allows the individuals in the population to survive better. 
 
        
                    
             
        
        
        
Answer:
kidneys, large intestine, skin, and lungs.
Explanation:
They all excrete
 
        
             
        
        
        
The aorta, which arises directly from the heart
        
                    
             
        
        
        
Answer: D. regulate the thalamus
Explanation:
The most important functions of the hypothalamus is to link the nervous system to the endocrine system by way of the pituitary gland. It's located at the base of the brain, near the pituitary gland. The hypothalamus is located below the thalamus and  it's very small . The hypothalamus plays a crucial role in many important functions and is responsible for the regulation of certain functions including: releasing hormones and regulating body temperature.Regulating the thalamus is not a function of  the hypothalamus.