Answer:Enrico must multiply the distance of mars from sun (meters) with the  to convert the distance in astronomical units.
 to convert the distance in astronomical units.
Explanation:
1 astronomical unit  = 

Let the distance between the sun and Mars be Y( meters)
Distance in AU= 
Enrico must multiply the distance of mars from sun (meters) with the  to convert the distance in astronomical units.
 to convert the distance in astronomical units.
 
        
                    
             
        
        
        
Answer:
sea floor spreading occurs at mid ocean ridges 
 
        
                    
             
        
        
        
Answer: 
Explanation: DNA is the information molecule. It stores instructions for making other large molecules, called proteins. and the function of DNA is To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.
 
        
                    
             
        
        
        
Answer: Operant speech training 
Explanation:
 Autism  Spectrum  Disorder  is developmental dysfunction that leads to notable social, communication, and behavioral challenges.
Operant speech training is a plan employed to make children makes use of language appropriately, it is mostly used for aiding speech in Autism Spectrum Disorder (ASD).
This approach involved the step by step procedures of increasing  child’s vocalization, imitation of sounds and words, teaching the child the meanings of words, and  teaching the child. how to use language to label objects. And how to express languages to make verbal requests and desires 
 
        
             
        
        
        
An antibody is also known as an immunoglobulin. It is a
glycoprotein that plays a critical role in the immune system by identifying and
destroying invading foreign particles such as viruses and microorganisms. Thereby,
antibodies protect people from disease and infection.