In 2001, what was the leading cause of death among people age 65 or older

One of the students at your school posted akward and embarrissing pictures of another student online

There are blank calories in a gram of carbohydrate

What link in the chain of transmission is described in the paragraph? sarah has been eating and sleeping poorly. she was just diagnosed with pneumonia. tests showed the illness was caused by streptococcus pneumoniae. in the chain of transmission, sarah is the (blank) , and streptococcus pneumonia is the (blank).