48. when the spectrum of the fluorescent lights in the classroom was compared to that of the blue light in the hall, a) the spectrum was blue shifted b) the spectrum was unchanged c) the spectrum absorbed blue light d) the spectrum was continuous

Informatii despre riul nistru dup algoritmul pozitia pe continent originea denumirii lungimea izvorul gura de varsare afluentii directia riului caracterul cursului activitatea de model are regimul. de inghet variatia nivelului so volu! mul de apei tipul de alimentatie importantanta pentru om unitatile de relief strabatute caderea riului