What can you hear but not touch or see?
The sound is what can you hear but not touch or see.
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Hormone that helps regulate calcium balance
PTH - Parathyroid hormone which balances calcium levels if they are low.
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Variation in human skin color is an example of
The main source of organic matter in soil is
The main source of organic matter in soil is the plant and animal tissue that decompose at each level of breakdown.
Water on the moon was discovered by
India & which country recently launched initiative to combat Marine Pollution?
When the diaphragm and external intercostal muscles contract,
Which tax uses the same rate for all income levels?
Tax that uses the same rate for all income levels is proportional tax.
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