When we bang our head, why do we instinctively immediately apply pressure to or rub the location of impact, and close our eyes?

During times of strees what increased in the body causing the body sex hormones to decrease

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).

When making a bed you are using good body mechanics when you