How does technology limit the future of space exploration? a. scientists are able to work both with current and future technology. b. scientists must first develop certain technologies before missions can be completed. c. scientists cannot make contact with older satellites in outer space. d. there are too many devices in space interfering with taking correct measurements.

One or more substances changing into one or more substances is an example of a

If a solution had a ph of 7 what is the solution

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.