An engineer has created a new design for the pipe systems in homes. In this design, pipes are joined together with flexible connectors that will protect against movement of the pipes. This new pipe system can be used for water, gas, and sewer lines. The engineer's design is most likely intended to lessen the impacts of which of the

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

Can someone me with 3 and 4 plz. this is for masteries test.