Id say this is more of a biology question or even a psychology question , well its not a question at all but the endocrine system is a collection of glands that secrete hormones direct to the blood system (circulatory system) to be sent to the desired / target organ , an example of a gland could be the pituitary gland (located towards rear of brain)
You used density, because water/ice has a density of 1, and ice will sink in anything with a lesser density
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I have examined the different parts of blub and I assume the answer is (D)T and U
Hope this helps you
Answer: An jack makes changing a tire easier because it lifts up the car to get the tire off of the ground.
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