Human beings are somewhat unusual among primates in the length of their life span beyond their productive years. This may have provided an adaptive advantage over the course of evolution and is known as ____.
a. the wisdom of elders
b. the grandmother effect
c. survival of the fittest
d. the grandfather effect
Question 2
Which of the following best describes the relationships of older adults?
a. Older adults have more friendships than younger adults.
b. Older adults are more likely than younger adults to form new friendships.
c. Older adults do not gain significant benefits from their friendships.
d. Older adults often find their relationships with siblings especially meaningful.
This solitary tree is an appropriate symbol for the tree of life
Human immunodeficiency virus (HIV)
Fetal development of human
The ring-tailed lemur is the best-known of the Madagascar primates.
Human Ubiquitin
Overview of the components of the human digestive system, together with a brief description of their