As compared to girls, the adolescent growth spurt typically __________ for boys.
a. begins earlier
b. takes less time
c. is less noticeable
d. lasts longer
Question 2
Twin studies on sexual orientation show that
a. genes are much more influential than environmental factors in determining sexual orientation.
b. sexual orientation is determined almost completely by environmental factors.
c. a genetic link cannot be established because not enough twins will participate in this kind of research.
d. genetic and environmental influences appear about equally responsible for sexual orientation.
In one-male group species, extra males typically reside in all-male “bachelor” groups. These are Han
Compared with modern humans, Homo erectus has a larger face, lacks a chin and canine fossa, and has
Eighteen-year-olds were the largest age cohort in the first year of the war in both armies. Soldiers
Ice sheet growth and decay is complex
Growth in Closed Economies
Sexual Development begins in the Seventh week of Gestation