What does the "right-to-know" law require from manufacturers, importers, and distributors of chemicals?

Can someone with my technology homework? ? i’m not very good with rulers. i need it asap though

Write a method replacekey in the minheap class with the following signature: public void replacekey(integer oldkey, integer newkey) the method will replace the first occurrence of oldkey with the newkey, and restore the min-heap property after the change. if the oldkey does not exist in the heap, the method prints an appropriate message and returns without changing the heap. example: suppose our binary heap object (bh) has the following keys: *** 4 6 7 32 19 64 26 99 42 54 28 then the method call: bh.replacekey (oldkey integer(54), newkey integer(2))

10. when you create a pivottable, you need to specify where to find the data for the pivottable. is it true