Cell Size and Scale, an elegant and deceptively simple interactive from the University of Utah's Genetic Science Learning Center, enables you to compare the sizes of various really small things. The interactive is available free on the Internet and works on desktop computers, smart phones, and tablets.
Answer:
D- Iron
~+lil more info!+~
Iron is the ultimate nuclear “ash,” from which no nuclear energy can be extracted.
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_____ is when a force is exerted on an object and the object moves a distance in the direction of the force.
Answer: Work
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Answer:HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe.
Explanation: