Which item is made from an acidic ingredient a) detergent b) soap c) ammonia d) vinergar

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How can an organ, such as the lungs, work for multiple body systems?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled