Which of these statements best describes the relationship between elements, compounds, and pure substances? (2 points) a Pure substances can be divided into two groups: elements and compounds. b Compounds can be divided into two groups: pure substances and elements. c Elements and pure substances are two of many different types of compounds. d Pure substances and compounds are two of many different types of elements.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).