Q1) How do solids like ice melt? Q2) How is a musical note different from a noise?
Q1) How do people get water in a desert? Q2) How do people live in the Amazon rainforest?
Q1) Why do grasses grow so well in grassland soil? Q2) How can crops be grown without using poisonous chemicals?
Q1) How did dinosaurs take care of their young ones ? Q2) How did Ichthysaur give birth to babies ?