Nitrogen is important for . healthy bones and teeth
oxygen transport in the blood
respiration
amino acids and DNA

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

we need additional information in order to determine the cause of death for anna garcia. there are at least 3 things with explanation included as to why we need them are as follows: