Which process is responsible for causing menstruation? a. breakdown of the corpus luteum b. fertilization of the egg c. implantation of the egg in the endometrium d. rupture of a follicle in the ovary e. repair of the endometrial lining

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

During binary fission, what events must occur before the cell splits into two new cells?

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.