What is the combination of alleles for a trait, shown as letters?? please help me i will mark brainliest

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

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