Answer:
He successfully and carefully performed a heart surgery on a man with a knife wound to the heart even though there were no X-ray machines to help him see into heart, while still making sure everything was done under antiseptic conditions.
Explanation:
Dr William Hale was in a dilemma when a black man with a knife wound to the heart stumbled into his hospital, Provident Hospital. Since there were no X-ray machines to help see into the heart the extent of the wound, the only option was opening the heart itself. It was a surgery no one had performed before, so it was a great risk. However, not performing the operation too was sure to result in the death of the man.
Dr William Hale confidently reassured the man that he could help. Assisted by other doctors, he carefully cut into the man's chest, examined the depth of the stab wound, found and repaired a torn blood vessel, stitched up the pericardium, and very carefully cleaned the wound and the chest cavity, to make sure that no infection set in. Afterwards, he sealed up the man's chest while still ensuring everything he did was done under antiseptic conditions. The man survived and lived in for many decades.
<span>The biosphere is simply "life on Earth"—the sum total, that is, of all living things on Earth. Yet the whole is more than the sum of the parts: not only is the biosphere an integrated system whose many components fit together in complex ways, but it also works, in turn, in concert with the other major earth systems. These and many other interactions make it easy to see why scientists speak of Earth as a system—and why some go even further and call it a living thing.
1.) </span><span>plants (biosphere) grow in the ground (geosphere)
2.) </span><span>The geosphere alone accounts for almost 82% of the combined mass of the four subsystems.</span>
Answer:
•Heart disease.
•Cancer.
•Unintentional injuries.
•Chronic lower respiratory disease.
•Stroke and cerebrovascular diseases.
•Alzheimer's disease.
•Diabetes.
•Influenza and pneumonia.
Explanation:
Hope this help you.
Answers: A and C
Explanation: Insulators are non metals and Conductors are metals the best Conductor is copper.
<h3><u>Answer;</u></h3>
aquifers
<h3><u>Explanation;</u></h3>
- <u>Most liquid freshwater is found under the Earth's surface as groundwater or aquifers, while the rest is found in lakes, rivers, and streams, and water vapor in the sky. </u>
- About 68% of freshwater is found in glaciers and icecaps such as in Greenland, the poles, and other glaciers. Another 30% is found in groundwater, which basically means aquifers. Only 1% of freshwater is found in surface water such as lakes, rivers, etc.
