Why are the testicles kept outside of the body?
A) They lower the temperature for sperm production.
B) The testicles cushion the penis and stop it from hanging too low.
C) There's no reason for this.
D) Earlier in human evolution, visible testicles helped males to sexually attract females.
A
You might also like to view...
Which of the following is NOT a factor in a
life history?
a. rate of development b. age at first reproduction c. population density d. life span e. all of these are factors in a life history
Freshwater is most likely to become contaminated or polluted by ________ from urban and rural environments
Fill in the blank(s) with correct word
Which features of naked mole rats are similar to eusocial insects? (Check all that apply)
A. higher relatedness between siblings than between parent and child B. colony has a large number of individuals C. a single queen is responsible for breeding D. division of labor E. haplodiploidy
The majority of foodborne illnesses are reported.
A) True B) False