Answers created by Chidatmika

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• How can natural selection lead to speciation?
  
• Can the number of nuclear protons change in a chemical reaction? What charged particles are contained in a #"sulfur atom"#, and a #"sulfide ion"#?
  
• Soaps form foam with hard water or soft water?
  
• Question #674c2
  
• Any idea about glands and ducts of our body?
  
• How do you solve #5/2z-8=-3#?
  
• Question #798b2