Final answer:
The idea that some Homo erectus individuals practiced cannibalism is debated. Recent research suggests cut marks on certain fossils may be due to animal scavenging rather than proof of cannibalism, leaving the matter unresolved.
Step-by-step explanation:
Whether or not some Homo erectus individuals engaged in cannibalism remains a subject of debate. Initially, fossil skulls found at Zhoukoudian, China displaying cut marks were thought to indicate cannibalistic practices. However, more recent research suggests that these remains may have actually been scavenged by animals, such as hyenas, rather than being evidence of Homo erectus cannibalism. Similarly, cut marks found on the bones of Homo antecessor might suggest cannibalism, but they can also indicate funerary practices or another yet unidentified practice. Thus, while the evidence points towards an increase in meat-eating and the use of fire among Homo erectus, the notion of cannibalism is not conclusively supported.