Which of the following is a theory of Herbert Spencer? A. Individuals with high intelligence and motivation should produce offspring while those who are less intelligent should not.
B. Morality in humans could be an adaptation that would turn primitive societies into modern industrial societies.
C. Sexual selection focused on adaptations that helped make it more likely for animals to reproduce.
D. Altruism can be a beneficial characteristic if the individuals involved are all related.

In what ways did the compromise of 1850 and the kansas-nebraska act of 1854 differ from the missouri compromise? both compromises used the established 36°30′ parallel to determine if territories would become free or slave states. both compromises used the mason-dixon line to determine if the territories would become free or slave states. both compromises let territories use popular sovereignty to determine if they would become free or slave states. both compromises only granted congress the power to determine if territories would become free or slave states.