Their source of carbon. Autotrophs obtain their carbon from inorganic sources such as from atmospheric carbon dioxide. Examples of autotrophs include plants, and euglena ( a protist).
Heterotrophs on the other hand, obtain their carbon from organic sources such as other organisms. Examples of heterotrophs include all secondary consumers, and decomposers.
Answer:
The answer somehow may true because sometimes pain killing medicines can provide relief of phantom limb pain and it is minimally invasive therapy.
Mechanism of pain killing medicine Tylenol:
Pain killing medicine Tylenol also called Acetaminophen. Acetaminophen fits to a class of drugs called analgesics (pain relievers) and antipyretics (fever reducers). The particular mechanism of action of acetaminophen is not known. It may reduce the production of prostaglandins in the brain. Prostaglandins are substances that cause inflammation and swelling. Acetaminophen dismisses pain by uplifting the pain threshold, that is, by necessitating a greater amount of pain to develop before a person feels it. It decreases fever through its action on the heat-regulating center of the brain. Specially, it tells the center to lower the body's temperature when the temperature is elevated.
Uses of Acetaminophen:
Acetaminophen is used for the release of fever as well as twinges and pains related with many conditions. Acetaminophen relieves pain in mild arthritis but has no effect on the primary inflammation, redness, and swelling of the joint.
Answer details:
Subject: Biology
Level: High school
Keywords:
• Pain killing medicines
• Tylenol or acetaminophen
• Uses of acetaminophen
• Mechanism of acetaminophen
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Answer:
C. surface tension
Explanation:
Surface tension refers to the property of water or any liquid to enhance its surface area by a certain amount. It is a very important property of water due to which it resists any external force due to cohesive nature of water molecules.
How surface tension help needle to float on water:
It is a property of water which enhance the attractive force between needle and liquid.
The molecules on the surface of water do not have any force acting from upwards because that side is exposed to atmosphere. This causes a downward force but no upward force on upper surface,so the molecule of surface tend to stay together by forming a thin sheet or imaginary layer.
If weight of any material cannot break surface tension it will float on water surface. This is what happens with needle.Therefore, when needle is placed on water surface with alot of care in horizontal direction, it will not break surface tension and hence will float on water. Please see attached image for better understanding.
Hope it clears up the picture!
