The human brain reaches 50 percent of its adult size by what age?

Fossils that are millions of years old cannot be dated accurately using

A) argon-argon (Ar40/Ar39 ) B) potassium-argon (K/Ar) C) carbon 14 D) none of the above techniques extend a million years into the past E) all of the above techniques extend a million years into the past

Forensic anthropologists are most often called for cases in which _________.

a. soft tissue is absent or badly decomposed
b. investigators find little information on the cause of death
c. DNA analysis is required
d. a body has been buried very deeply

Neandertal brain size

a. was smaller, on average, than that of modern humans. b. was larger, on average, than that of modern humans. c. was smaller, on average, than that of Homo erectus. d. averaged about 2,500 cm3. e. averaged about 1,100 cm3.

What was the Columbian Exchange?

What will be an ideal response?