Why does most of what we know about sexual behavior come from studies of other species like rats?
a. Research on sexual behavior in humans has been considered off limits for years and hence hard to get funded.
b. Male rats copulate many more times than humans, up to 20 times a day
c. Researchers can alter the hormonal control of animals, which would be unethical in humans.
d. All of the above
Question 2
The major drawback of family studies is that:
a. It is difficult to get general population measures on the characteristic in question
b. Families that share genes also share environments
c. They are costly studies to conduct
d. Most people don't want to participate in these studies
The frequency of competition according to the number of species involved.
Where mangrove diversity is high, mangrove species show clear patterns of vertical zonation relative
A number of tree species can be interconnected by mycorrhizal fungi in the forests of British Columb
Hemiphlebia mirabilis, the Ancient Greenling, is a species of damselfly in family Hemiphlebiidae.
Species Diversity "تنوع الكائنات الحية"
Some species extinction