Read the following scenarios and answer the question in each one.
15. A 17-year-old linebacker for the high school football team had a helmet-to-helmet collision with the running back
from the opposing team. The linebacker was assisted off the field and evaluated by the trainer, who
recommended that he be evaluated in the emergency room. The MRI in the emergency room showed bruising of
the cerebral tissue. What is the diagnosis for this patient?

Contusion

Explanation:

Contusion is as a result of bruises and it happens when an injured capillary or blood vessel leaks some amount of blood into the surrounding area. Contusions are a type of hematoma, which refers to any collection of blood and can be associated with multiple microhemorrhages, small blood vessel leaks into brain tissue. Contusion is common in 20–30 percent of severe head injuries.

[content deleted] - user123802726recklesschicken

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.