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What kind of wound occurred when the skin scrapes against a hard surface and tiny blood vessels break in the outer layer of skin

When you have proper posture, your back is arched. a. true b. false

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.