Calcium
Calcium helps build and maintain bones.
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Dendrite, axon, and cell body are the major parts of neurons. </span>
This would be the nucleiod region.
The major differences are that fats are solid at room temperature while oils are liquid, and that oils are usually of plant origin while fats are of animal origin.
The example of a nonpoint source of freshwater is the first option: <span>pesticide runoff from farm fields. This is one of the most common nonpoint source of poullution</span>