Chemistry which apparatus transfers solid chemicals into smaller particles

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration