You are in a car when you hear a flash flood warning for your area on the radio. you should: try to outrun the floodwater by driving faster. get out of your car and go to higher ground. roll up the windows, buckle your seatbelt, and hang on. turn the radio off and think happy thoughts.

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.

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.

Which of the following statements about communication is most accurate