Your answer is sublimation.
C the empty pills, because they can be linked back to see if death was a side effect.
Answer:
yes. they can block the wind which causes top soil erosion and they also soak up some the water in the soil
Answer:
Alkali metal hydroxides can be used to test the identity of metals in certain salts. The colour of the precipitate will help identify the metal : Calcium hydroxide is soluble; no precipitate is formed.
Answer:
A experimental investigation
