Some keep flying for decades, while others end up on the scrap heap
Contain 46 chromosomes each
Antibodies to common microorganisms have been developed by infancy. <span>An </span>antibody<span> (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses.</span>
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i think they are orignally from cold areas so they store water and moisture in there needles. and they stay green year round.
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