If the out-of-Africa hypothesis of human origins is correct, which of the following best describes the pattern of hominin migration from Africa?
A. H. ergaster migrated 2 million years ago;
H. sapiens migrated 200,000 years ago.
B. H. sapiens migrated once 2 million years
ago and again 200,000 years ago.
C. H. ergaster migrated once 2 million years
ago and again 200,000 years ago.
D. H. neanderthalensis migrated once 1.3
million years ago and H. sapiens migrated
200,000 years ago.
E. H. heidelbergensis migrated 2 million
years ago and H. sapiens migrated 200,000
years ago.
A
You might also like to view...
Four of the five answers listed below are parts of the inner ear. Select the exception
a. eardrum b. oval window c. scala tympani d. basilar membrane e. cochlea
The region within the prokaryotic cell where the DNA is located is known as the ________.
Fill in the blank(s) with the appropriate word(s).
In the northeastern Pacific ocean, sea otters occur at a relatively low abundance. By preying upon sea urchins, sea otters maintain underwater kelp (large algae) "forests", which would otherwise be decimated by the herbivorous sea urchins. The kelp forests supply food for a wide variety of marine organisms, as well as providing refuge from predation and nursery habitat for juveniles. Based on this, what type of species best describes sea otters?
A. indicator species. B. flagship species. C. keystone species. D. dominant species. E. umbrella species.
Which of the following serves as a physical barrier to prevent the sperm cell from getting to the egg cell?
A. abortion B. IUD C. condom D. spermicidal jelly