Answer:
Substitution
Explanation:
There are 3 types of mutations: deletions, insertions, and substitutions. 
A deletion deletes one of the bases (AGTC), which can completely mess up the sequence and create a completely different protein. 
An insertion inserts a new base into the strand, which can also completely mess up the sequence and create a completely different protein.
A substitution just changes one of the bases to a different base. This doesn't usually affect what protein is made, but when it does, it only changes one of the amino acids in the sequence, whereas the others change all of the amino acids in the sequence.
If the same protein is still created, then this person only experienced a substitution because it didn't affect the end result of the protein. 
 
        
             
        
        
        
Answer;
-PET scan 
A PET scan uses radioactive markers in the blood to monitor blood flow and metabolic activity via x-ray
Explanation;
-A positron emission tomography (PET) scan is an imaging test that helps reveal how the tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.
-A PET scan is used to diagnose certain health conditions, to plan treatment, to find out how an existing condition is developing, and to see how effective a treatment is.
-In a PET scan, a machine detects radiation that is emitted by a radiotracer. A radiotracer consists of radioactive material that is tagged to a natural chemical, such as glucose.
 
        
                    
             
        
        
        
False- interneurons pass electrical impulses from a sensory neuron to a motor neuron (it connects these neurons)
        
                    
             
        
        
        
Answer:
Venus should be b
good luck
Explanation
the order is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune