The atomic mass is the

number of protons plus the number of neutrons

number of protons plus the number of electrons

number of neutrons

number of protons

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What is directional selection

Which is a primary function of the muscular system? A. Manufacture red blood cells B. Support and provide structure to the body C. Aid the body in movement D. Provide storage areas for minerals

A ratio used as a scale on a map is called

The energy required for the mechanism of active transport comes from

When a spoon tarnishes this type of chage has occurred?

Once pathogens have penetrated the non-specific barriers, they are confronted by macrophages and natural killer cells. how do these cells contribute to maintaining homeostasis?

What happens when a plate carrying oceanic crust collides with a plate carrying continental crust?

What carbohydrates humans can't digest?

What is the relationship tween genes and chromosomes a. Chromosomes contain one or more genes b. Genes contain one or more chromosomes c. Chromosomes use DNA code to manufacture genes d. Genes use DNA code to manufacture proteins for chromosomes

explain how the genetic information in one of your body cells compares to that found in other body cells