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a
Human body has more calcium than earth crust
b
Very little nitrogen is present in earth’s crust.
c
Hydrogen is present more in human body than earth crust
d
Earth curst has equal amounts of carbon and sulphur
answer is A.
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Detailed Solution
Human body has 1.5% calcium and earth crust has 3.6% calcium. Negligible amount of nitrogen is present in earth crust. Hydrogen is 0.5% in human body and 0.14% in earth crust. The amount of carbon and sulphur in earth crust is 0.03% each.