Happy birthday!!!

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Across
  1. 3. Weekly newspaper causes problems (5)
  2. 4. How a smart student boards a bus (4)
  3. 7. Starting everything with recordings provides an astronomical event (7)
  4. 9. Movie director shouts separate acts for this section! (6)
  5. 12. Missed call from mum, white treat (8)
  6. 15. Adam studies confused with mined ice (8)
  7. 16. Birthday celebrations are heard from the bbq (4)
Down
  1. 1. Person in charge supports a wheel (5)
  2. 2. Tell someone to switch on a good Jew (7)
  3. 5. Unidentified object said it would risk everything (3,2)
  4. 6. Back in the times of Jews and Arabs (6)
  5. 8. Helps with music when in fear! (3)
  6. 10. Security search in lots at once (3)
  7. 11. Perhaps filleted fish mix in Portugal, by the sound of it (6)
  8. 13. Infant listens in the winter(5)
  9. 14. Greek zoo begins at what time? (4)