| A | B |
| vegetation | refers to all plant life that is edible, which means it provides people and animals a source of food. |
| climate | has to do with the conditions surrounding weather, such as: temperature, amount of rainfall, etc. |
| geography | the study of physical characteristics of the earth, as well as locations of countries and the bodies of water |
| livestock | the name for animals that are bred and raised in captivity, such as cattle, chicken, pigs, horses, sheep, etc. |
| herder | a person who works as someone who raises animals as livestock |
| plain | a large grassy area of fertile land, good for growing crops or raising livestock |
| prehistory | refers to the period of time before there was writing and recorded history |
| nomad | a person who migrates from one location to another in search of fertile land to plant crops or raise animals |
| archaeologist | a scientist who studies ancient artifacts and fossils to help us learn about our past |
| hominid | the earliest known form of human life that walked on two legs |
| fossils | the physical remains of ancient life forms, such as bones and skeletons |
| artifacts | objects and tools found and studied by archaeologists that help us to learn about ancient civilizations |
| evolution | the scientific study of the origins and beginning of human life, based on the theory that human beings have slowly developed from other types of animal life |