Coal and chalk are examples of what kind of sedimentary rock

Maintaining a healthy weight allows the respiratory system to work more effectively because a. oxygen is being delivered more adequately. b. the heart does not have to pump as forcefully. c. the capillaries are constricted. d. the lung capacity allows for small amounts of air.

Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?

Which of the following is something one should do or say when they encounter a bereaved person? avoid mentioning their loss say "i am sorry" avoid them so they can grieve privately tell them to move on