What did humans start as?

Why is salt added to snow during winter? Why does Jupiter orbit faster than Neptune? The speed at which molecules are dependent on temperature and a state of matter? What city is it in 41 North 12 east? What does not affect the strength of an electromagnet? Suppose there are 500 units of energy available at the producer level of the energy pyramid Approximately how many units of energy are available to the first level consumer? What can visibility deteriorate? What land features are formed from a convergent boundary? Where can ozone depletingsubstances found on board? What are the base units in the SI chart? Can nm romex be used from breaker panel box to first afci outlet? What does a wave power machine do? Which is most likely to provide information about the earths past climates? What do sally light foot crab babies eat? How do you convert a differential pressure of 43 psi to absolute units? What does ntn mean? What is the term best describes data that were originally collected at the earlier time by a different person for a different purpose? Did people know that mt st helens was going to erupt? Where in South America can you be 30 miles from the equator but knee-deep in snow? How did people know that Vesuvius was erupting?