Question

i-readyidentifying central idea — instruction — level eskull (see x-ray scan on the left) and strands of his hair thatwere found.ötzis belongings are also treated with the utmost care.these objects are just as valuable as ötzi himself fortelling about his life and times. even microscopic grains ofpollen and scraps of moss can be important clues. byanalyzing the plant materials found on ötzi and hisequipment, scientists were able to figure out that he livedin what is now northern italy.how did ötzi die?there have been many theories about how ötzi died. atfirst scientists thought he might have been lost or injuredin a surprise snowstorm and died from the cold. then, injune 2001, doctors studying new x-rays discovered ashadowy image of something embedded deep withinötzis back. to learn more, they used ct scans. what theyfound shocked them.the image was that of an arrowhead!what key details show that an arrow may have killed ötzi? add the second detail to the chart.main ideaan arrow may have killed ötzi.key detailx-rays showed a shadowy image in ötzis back.key detailct scans showed an arrowhead.ct scans revealed what killed ötzi.ct scans shocked the doctors.

Explanation:

The main idea is that an arrow may have killed Ötzi. The first key detail is the shadowy image in Ötzi's back from X-rays. The second key detail is the confirmation from CT scans that the shadowy object was an arrowhead, which directly supports the arrow-related death theory.

Answer:

Key Detail 2: CT scans showed an arrowhead.