D because where there is deep n stuff
        
             
        
        
        
Answer:
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
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The right answer is vitamin C—citric acid.
Vitamin C or ascorbic acid protects against cellular aging, is essential for the immune defenses and increases the assimilation of iron of plant origin.
Citrate is a biological molecule found in all living organisms because it is involved in the Krebs cycle (or citrate cycle) to produce energy.
 
        
             
        
        
        
Answer:The insurance that pays first (primary payer) pays up to the limits of its coverage. The one that pays second (secondary payer) only pays if there are costs the primary insurer didn't cover. ... If your employer insurance is the secondary payer, you may need to enroll in Medicare Part B before your insurance will pay.
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Several species or warblers can live in the same spruce tree only because they occupy different nitches within the tree. Hope this helps!