L 4.5.2 Test (CST): Computer-Scored Unit Test Question 19 of 25
What are the fixed alleles in the human species?
A. The alleles that no one has
B. The alleles that are on the most chromosomes
C. The alleles that change most often
D. The alleles that everyone has

se

explanation:

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

i think that it is c, d, and e, hope this