stuck on 2. 4a ??????'s constant, the ratio of a photon's energy to its wave frequency. and 8 down 5.5. distinctively marked marine creature of the family stegostomatidae Z?B?A ?H?R?
9 down - a direct vote by the electorate on some questionof ususally national impotance. Also 2d - a row or column of selectable buttons dispalyed on a computer screen
thank you for previous answer The O is right but the R may be wrong.
Clue 7 letters: obvious and lacking in subtlety ?L???N? I had glaring which is where the r comes in...
9D old world songbird with a mottled brown and white plumage and pale cream underparts 8 letters ?H??C?A?.
24D indifference to pleasure and pain 8 letters ?T?I??S?
thanks in anticipation...