Which of the following devices is associated with the reception of radio signals? a. transmitting antenna b. demodulator c. oscillator d. microphone what is the true answer . i need the correct answer

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

The identities of substances are the same before and after which type of change