QUES: The oxygen content of the blood becomes be too low while the blood level of carbon dioxide becomes too high

correct the punctuation.

CORRECTED: The oxygen content of the blood becomes be too low while the blood level of carbon dioxide becomes too high.

QUES: Copies of Holbeins Great Dance of Death from Icones Mortis Sexaginta Imaginibus by Eberhard Kieser Theres a larger version here Emperor

correct the punctuation.

CORRECTED: Copies of Holbein's Great Dance of Death from Icones Mortis Sexaginta Imaginibus by Eberhard Kieser. There's a larger version here: Emperor.

QUES: 1Karen Marie Andersen born 1862

correct the punctuation.

CORRECTED:
1)Karen Marie Andersen, born 1862