Veins
carry blood to the heart
carry blood away from the heart
connect arteries and capillaries
sent electrical signals to the heart

What is a quick method use only to only partially cooked item

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Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.