How many hair follicles does a human have?

Currents are caused by temperature and density differences

Steven hawking is on record as saying that viruses can be considered a form of life. considering the list above, what might be his evidence? a) item 5 b) items 1 - 3 c) items 4 - 7 d) items 1 & 2

What organic substance cuts dna into different sized fragments?