What is the purpose of the liquid paraffin in Tube A? Tick one box.
To prevent evaporation
To stop air getting in
To stop the temperature
going up
To stop water getting in?

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material

Speed is the ratio of the distance of an object moves to