Answer:
The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element.
Explanation:
please give me a heart. anyone good at math just posted my question 
 
        
             
        
        
        
Answer:
D
Explanation:
All of the other examples are positive
 
        
             
        
        
        
Messenger RNA is a molecule that brings amino acids to the ribosome during translation mrna t-rna rrna dna. 
It is a molecules which carries the coding sequences for protein synthesis and are called transcripts. Ribosomal RNA (rRNA) molecules molds the core of a cell's ribosomes and move RNA (tRNA) molecules that carry amino acids to the ribosomes throughout protein synthesis. 
        
             
        
        
        
Answer:
type AB 
Explanation:
because you can write type A blood with two big I with A antigens or a big I and a small i
 
        
             
        
        
        
I think this layer formed by the strong currents or by waves slowly moving the shells to the shore along with other shells creating a layer of shells. If I’m wrong then I’m sorry:(