What defines a mixture? a) a mixture contains different substances that are chemically combined. b) a mixture contains different substances that are not chemically combined and can be broken down into its basic substances through physical means. c) a mixture is created through a chemical reaction.

B is your best answer because a mixture is when two or more things combine but not chemically. Take soup for example you take out all the pieces because they didn't combine together and just become 1 thing they still have parts. You can still take the noodles, you take the fish or meat out still, you take the broth away to.

Ideal body fat percentage for men

CategoryPercentage

Essential fat     2-5%

Athletes             6-13%

Fitness             14-17%

Acceptable     18-24%

Explanation: