The genusHomo is a taxonomic category that includes modern humans and their close relatives. It is part of the familyHominidae, which also includes the great apes (chimpanzees, bonobos, gorillas, and orangutans).
Long Childhood and Extended Lifespan: Compared to other primates, species within the genusHomo have extended periods of childhood and longer lifespans.
Several species have been classified within the genusHomo. Some of the notable species include:
Homo habilis: Considered one of the earliest members of the genusHomo, Homo habilis lived approximately 2.1 to 1.5 million years ago and is associated with the Oldowan tool tradition.
Homo erectus: This species had a wide geographical distribution and is known for its use of more complex tools such as hand axes. Homo erectus lived from about 1.9 million to 143,000 years ago.
When studying the genusHomo, it can be helpful to focus on the key features that distinguish this group of hominins from other primates. Pay attention to the evolutionary trends in brain size, tool use, language development, and social behavior. Familiarize yourself with the characteristics of each species within the genusHomo and their respective time periods and geographical distributions.
Additionally, consider the impact of environmental and ecological factors on the evolution of the genusHomo, as well as the interactions between different Homospecies and their potential contributions to the genetic makeup of modern humans.
Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.
Energy
Students who demonstrate understanding can:
Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as either motions of particles or energy stored in fields.