Question: If adoorbell is used to start the flow of current in an electrical circuit, then what is used to start the flow of current in an electrical circuit? Answer choices: - energy - a doorbell - heat energy - kinetic energy - simple - Firecrackers - cycles - deltas
Answer: a doorbell

Question: If pulped wood requires cutting down trees, then what requires cutting down trees? Answer choices: - swamp vegetation - to move people - vehicles - Greenhouse gases - pulped wood - burning - deforestation - fossil fuels
Answer: pulped wood

Question: If sand is formed by weathering, then what process creates sand? Answer choices: - Water expanding - beach - evaporation - friction - silicon dioxide - weathering - dunes - rainfall
Answer:
weathering