A diaphragm works as a birth control device by
a. not allowing sperm to enter the vagina
b. not allowing sperm to enter the uterus
c. not allowing a fertilized egg to implant
d. killing sperm
Question 2
According to the authors of your text, the available evidence about prehistoric sexuality is best summarized by which of the following?
A) Prehistoric males dominated females in all aspects of their culture, as shown by male symbols of power in ancient art.
B) There was a division of labor between men and women, and early art symbolized female (and later, male) contributions to fertility.
C) Although ancient men and women frequently engaged in sexual behavior, they did not understand its link to childbearing.
D) Ancient people experienced frequent deaths, short-term pairings of men and women, and rarely had children that survived.
sperm trying to fertilise an egg.
A typical evaporative emission control system. Note that when the computer turns on the canister ...
Control of BP and Blood Flow
Gene Expression Control in a Fly
Mechanisms of negative control of transcription