Mantle made blank to determine if certain trait forms and their alleles were inherited together

Explanation for basic character?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.