Question:
Use evidence from the fact that the floating arrow on a compass always points towards the north to answer the following question. "The floating arrow on a compass points in the direction of where a group of hikers came from. In which direction are the hikers hiking?"

Answer:
south

Question:
Use evidence from the fact that refraction causes something to look different to answer the following question. "Refraction"

Answer:
makes a straw appear broken when in a cup of water

Question:
Use evidence from the fact that if an organism dies then the population of that organism will decrease to answer the following question. "The population of zebras is stagnant due to a lack of new baby zebras, what will happen over time to the community without support?"

Answer:
shrinkage