Answer:
Lymph nodes become swollen in response to illness, infection, or stress.
Explanation:
Swollen lymph nodes are one sign that your lymphatic system is working to rid your body of the responsible agents.
 
        
             
        
        
        
Answer:
Bones are organs composed of hard living tissue providing structural support to the body – it's scaffolding. It is a hard matrix of calcium salts deposited around protein fibers. Minerals make bone rigid and proteins (collagen) provide strength and elasticity. ... The outer layer of bone is called Cortical bone.
 
        
                    
             
        
        
        
Answer:
autotrophs, primary producers :)
Explanation:
 
        
             
        
        
        
A mutation which occurs when a base is introduced into the DNA sequence before transcription begins will lead to frame-shift of a single base on the DNA sequence resulting in nonfunctional protein from the transcribed mRNA.
Explanation:
This change either through addition or deletion of a single base in the codon sequences of the DNA will modify the amino acid codes and will result in nonfunctional proteins after transcription.
This mutation will just result in change of a single base, i.e., it would be added either to the enhancer region or the silencer region of the sequence before the promoter which initiates transcription. 
The mRNA produced due to mutated DNA sequence after the deletion or insertion point will be read as out of frame thus resulting in nonsense protein.
 
        
             
        
        
        
Answer:
Due to the high density of the oceanic plate.
Explanation:
can I get brainliest pls