Question 10(multiple choice worth 7 points)
(03.01 lc)

what best describes index fossils?

organisms that existed over a limited period
organisms whose age is hard to detect
fossils that are used in radioactive dating
fossils of the most ancient organisms

Which type of basaltic lava flow has a fairly smooth

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above