Because,
 we can’t believe that all of this will come to an end sooner or later.
        
             
        
        
        
Answer:
Is interpreted by the brain.
Explanation:
Sensation is the ability to feel things physically. It can be defined as the process in which the brain collects information through the five sense organs( eyes, nose, skin, tongue, ears) after which the information is interpreted by the brain.
Sensory neurons are responsible for the detection of a stimulus. Neurons helps to transport the message about the stimulus to the brain or spinal cord, which then interprets the information and decides on the specific type of action to carry out. 
 
        
                    
             
        
        
        
I think it is False. Heterotrophs are organisms that cannot make their own food. They obtain it from consuming other organisms. To make this statement true, you would have to replace the word, "heterotoph" with the word "phototroph" or "autotrophs". 
 
        
        
        
Answer:
No, they do not all cause a change in amino acid sequence of a protein.
Explanation:
Substitution mutation is the type of mutation that results when the nucleotide base of a gene is replaced by another base in the sequence. A substitution mutation can result into three different types of mutation namely; silent mutation, missense mutation, and nonsense mutation. 
- In silent mutation, the nucleotide base that gets replaced by another still forms a codon that encodes the same amino acid as in the original sequence. e.g if guanine replaces adenine in the sequence, TTA to form a mutated sequence, TTG. This mutated codon (TTG) still encodes LEUCINE amino acid just as TTA does. Hence, there is no effect on the resulting amino acid sequence. This portrays that NOT ALL SUBSTITUTIONS cause a change in amino acid sequence of a protein.