I have done projects on this before so the answer is Physical Activity. There is a difference between them all that I can explain if you would like.
Answer:
When you pick up your personal electronics device or your mobile phone do you ever think about what's in it? A tremendous variety of elements are needed to make a single electronic device. Some are rare, some are common. All must somehow come from Earth or its environment.
Store in separate fridges.
The liver stores a multitude of substances, including glucose, vitamin A, vitamin D<span />, vitamin B12,vitamin K, iron, and copper.
Should be A, perishable food needs to be refrigerated or it will spoil