Question: If avalley are formed by erosion, then how does water cause a valley to form? Answer choices: - Physical weathering - By the process of erosion - By falling from clouds - It used to be covered by water - fissures of hot, acidic water - Heavy snow accumulation - By forming puddles - Water expanding
Answer: By the process of erosion

Question: If water-damaged carpets have a negative impact on the respiratory system, then what has a negative impact on the respiratory system? Answer choices: - harmful substances - water-damaged carpets - a pathogens - lungs - density - oxygen - Something that causes allergies - some viruses
Answer: water-damaged carpets

Question: If heating salty water causes the solvent to evaporate while the solute remains, then what is left over when salty water is heated? Answer choices: - Time and energy - nutrients - Sediment - energy - bacteria - Energy. - loose soil - The solute
Answer:
The solute