The answer to your question is t<span>he signal travels through the nerve of the hand to the spinal cord and then to the brain.
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Answer:
Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
 
        
             
        
        
        
Answer:
1. A flood could damage houses with causes gas leaks, which isnt good for animals and the enviroment. 
2. A flood is bad for animals, and animals/trees keep the ecosystem alive.
 
        
             
        
        
        
Answer:
A} the sun 
Explanation:
The sun is the greatest and heavier then the other planet
 
        
             
        
        
        
Answer:
b-short-term environmental change
Explanation:
this natural change/flooding is a short environmental change because it last a short period of time.