Set A is the set of factors of 12, set B is the set of even natural numbers less than 13, set C is the set of add natural numbers less than 13, and set D is the set of even natural numbers less than 7. The universal set for these questions is the set of natural numbers less than 13. So, A = {1, 2, 3, 4, 6, 12}, B = {2, 4, 6, 8, 10, 12}, C = {1, 3, 5, 7, 9, 11}, D = {2, 4, 6}, and
U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}.
what is AnB

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

linnaeus is the father of taxonomy

explanation:

which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.