How is ice-cream melting a physical change?

For the following, determine the type of reaction and then give products.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

  the mississippians were considered to be  horticulturalists, which means they were