Rocks are abiotic
(Soil?) is made of both abiotic and biotic materials
Sea shells are biotic
Answer:
One focal point of the moon's orbit is 50,000 km.
Answer:
both are eukaryotic cells
The hormone calcitonin is controlled by a negative feedback mechanism because it's release leads to the decrease of calcium blood levels.
<h3>What is negative feedback mechanism?</h3>
A negative feedback mechanism is the defined as a type of regulatory mechanism in the body where by the increased output of a system leads to a decrease of another system.
Therefore, the release of the hormone calcitonin (increased level of calcitonin in the blood) will lead to decrease in blood levels of calcium.
Learn more about hormones here:
brainly.com/question/8162998
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