Airways, roadways, railways, and waterways.
Answer:
D. amphetamines became available from illegal laboratories rather than legitimate pharmacies
Explanation:
Due to the amendments to federal drug laws known as Drug Abuse Control Amendment of 1965, amphetamine became available from illegal laboratories rather than legitimate pharmacies. Prior to the amendment drugs like barbiturate, amphetamine and lysergic acid diethylamide (LSD) could easy be gotten from pharmacies but the amendment restricted the availability of such drugs. The amendment was as a result of increase in drug abuse among the American population.
The answer is cultural diffusion.
Fluid intelligence
Fluid intelligence is the capability to analyze rationally and resolve difficulties in unusual circumstances, autonomous of collected information. Fluid intelligence requires the intelligence to identify models and associations that underpin novel intricacies and to extrapolate these conclusions using reasoning.
Crystallized Intelligence
Crystallized intelligence relates to the collection of information, data, and abilities that are procured during individual life. People often demand that their knowledge appears to decrease as they progress towards their age.
