When a person is in a state of fear, the hormone epinephrine is released. this hormone stimulates the activation of energy-generating catabolic pathways in order to provide the body with enough energy to respond to the element that is inducing the fear. how would that be to a person who unexpectedly finds themselves in close proximity to a lion?

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

9. the history of life on earth is recorded in

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic