Discussion Topic The discussion is where you discuss a specific health topic with the rest of the class. Read through the topic thoroughly, then post your thoughts on the appropriate discussion board. Write at least one well-developed paragraph. As this is a discussion, don't forget to respond to at least two other students. Please be courteous and use proper netiquette Discussion 4.1 Barriers of Fitness Discuss some of the barriers that keep people from becoming physically fit. Describe what could be done to overcome these barriers​

Which of these is a feature of audible pedestrian crosswalk signals? o a. pedestrian tracking o b. emergency instructions o c. button location signaling od. responses to voice commands

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses.b) the infected individuals happened to be infected with all three virus types.c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly.d) the human was likely infected with various bacterial strains that contained all three rna viruses.

What else happens in your cardiovascular system in response to your sympathetic nervous system? why might your blood vessels need to expand to accommodate this?