Biofilms and immobilized cells can<span> be used to retain microbial biomass in a ... to be scheduled closer together allowing for an </span>increase<span> in plant production. ... </span>bioreactor<span> without additions of nutrients or medium until the </span>growth<span> profile is finished.</span>
The answer is:
Because they are likely to change more than one animo acid
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Protist just can do one function only.the just have
<u>arteries carry oxygenated blood and veins carry de-oxygenated blood.</u>