When was the only time when earth had no rocks

4.6 to 4 billion years ago

Explanation:

Hadean time (4.6 to 4 billion years ago)* is not a geological period as such. No rocks on the Earth are this old, except for meteorites. During Hadean time, the Solar System was forming, probably within a large cloud of gas and dust around the sun, called an accretion disc.

special interest groups must step back and let the process work itself out a representative can amend it at several points in the congressional staffers must do homework and report to the floor on what they 've learned

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: