[Solved] It is easier to maintain a cartel for ________ than for ________. A) services; natural resources B) natural resources; manufactured goods C) products with lots of substitutes; products without substitutes D) copper; nutmeg Sexual Development: The process by which individuals attain physical and psychological characteristics related to sexuality, including puberty and sexual orientation. Hormones: null Observations: The act of noticing or perceiving something and registering it as being significant, often used in research and studies for data collection. Pornographic Magazines: Printed publications containing images and texts intended to stimulate erotic feelings rather than convey art or education.