Scientific validity is the applicability of a conclusion drawn in the context of a scientific experiment to the world at large.
        
             
        
        
        
I think the answer would be needs. Hope this helps.
        
             
        
        
        
5a. the force moving object one place to the next
5b the force moving object without anything happening
5c the force moving a object and changing its position
        
             
        
        
        
The answer is D 
2 red and 2 roan
        
             
        
        
        
Answer:
For the Numbers on the leg Photo
1. Rectus Femoris
2. Vastus lateralis
3. Tibialis Anterior
4. ADDuctor longus
5. Gracilis
6. Satorius
7. Vastus Medialis
8. Gluteus Medius
9. Gluteus Maximus
10. Semitendinosis
11. Semimembranosus
12. Biceps Femoris
13. Gastrocnemius  
Explanation: is correct