Use this A2-B1 ESL science reading passage to learn why metal rusts. It includes key vocabulary, reading comprehension questions, and answers for English learners.Reading LevelA2-B1Word Count197 wordsReading PassageRust is the reddish-brown material that can appear on some metal objects. You may see rust on old bikes, gates, tools, or nails.Not every metal rusts in the same way. Rust usually for..