Everyday ScienceInternal Environment Maintenance
Kidneys filter blood to produce
urea
uric acid
urine
ammonia
urine
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Vitamin C is soluble inA. fat
B. water
C. ethers
D. phenols
The peritoneal cavity is lined by
A. peritoneum
B. Epitoneum
C. epidermis
D. endodermis
The density of air in the atmosphere is
A. uniform
B. not uniform
C. zero
D. none of above
In the body, the weight of blood is about
A. 1/12th of body
B. 1/5th of body
C. 1/8th of body
D. 1/4th of body
Which substance is present in fuel?
A. Iron
B. Gold
C. Carbon
D. Copper
The energy stored in coal is
A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
A human breath per minute is
A. 16-30 times
B. 16-20 times
C. 15-20 times
D. 15-18 times
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