your answer is Option B
there are 90 elements found naturally so option B statement is incorrect
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What happens when carbon dioxide builds up in your lungs?
If the person's breathing passage were filled with carbon dioxide instead of air, it would lead to respiratory failure.
Signs of respiratory failure:
- The symptoms of respiratory failure depend on the cause and the levels of oxygen and carbon dioxide in your blood.
- The inability to breathe in enough air and shortness of breath are both signs of low blood oxygen levels. Your fingernails, skin, and lips could all be blue in hue.
- Rapid breathing and confusion can occur when there is a high carbon dioxide level.
- Those who experience respiratory failure can lose consciousness or become extremely tired. Arrhythmia (irregular heartbeat) may also exist in them. If your brain and heart aren't getting enough oxygen, you can experience these symptoms.
Learn more about respiratory failure here,
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<span>3) which is an example of a physical change
</span><span>a) grinding pepper</span>
KE = (1/2)mv^2
m = 10.0 kg
v = 5.00 m/a
KE = (1/2)(10.0)(5.00)^2 = (1/2)(10.0)(25.0) = 125 J
C. 125 J
Answer:
Explanation:Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room ...