Which of these is the most accurate depiction of early hominin evolution?
A) There were at least two lines of early hominins, one of which leads to the genus Homo and the other which went extinct.
B) There was only one dominant species of hominin, with a great deal of intra-specific variation.
C) There were at least four lines of early hominins, but they all became extinct long before the emergence of Homo.
D) There is very little consensus among paleoanthropologists about which features identify the true hominins.
A) There were at least two lines of early hominins, one of which leads to the genus Homo and the other which went extinct.
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Which of the following is NOT true of Sivapithecus?
a. it is the sole ancestor of orangutans b. it was an arboreal quadruped c. it lived in Asia d. its teeth were thickly enameled
If the price of a variable input increases, all of the following curves will shift upward except which one?
A) average fixed cost B) average variable cost C) average total cost D) marginal cost
In the last decade there has been a reduction in the extent to which Americans alter their appearance because of socialization
Indicate whether the statement is true or false.
RNA is essential for carrying out the function of DNA
a. cell replication b. energy production c. cytoplasmic d. protein synthesis