What are the main principles of the theory of natural selection? a. there are only three principles of the theory of natural selection - variation, overproduction, and adaptation. b. adaptation is the only principle of the theory of natural selection. c. variation, overproduction, adaptation, and descent with modification d. variation, reproduction, adaptation, and descent with modification

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…