| Term | Definition |
| Primate | mammals that are characterized especially by advanced development of binocular vision, specialization of the appendages for grasping, and enlargement of the cerebral hemispheres and that include humans, apes, monkeys |
| Traits | a distinguishing quality (as of personal character) |
| To classify | to assign (as a document) to a category |
| Fossil | preserved from a past geologic age (in a rock) < ~ plants> |
| Genetic | of, relating to, caused by, or controlled by genes or DNA <a ~ disease> |
| Ancestor | one from whom a person is descended and who is usually more remote in the line of descent than a grandparent |
| Similarity | resemblance, the quality or state of being almost the same |
| Parent | : one that begets or brings forth offspring |
| Behavior | the manner of conducting oneself, the way in which something functions or operates |
| Complex | hard to separate, analyze, or solve |
| Locomotor patterns | the way an animal or person move around in their environments |
| Vertical | perpendicular to the plane of the horizon or to a primary axis : upright |
| To leap | to spring free from or as if from the ground : jump < ~ over a fence> |
| Limbs | Arms and legs |
| To exhibit | to show or display outwardly especially by visible signs or actions < ~ no fear> |
| To bear | to move while holding up and supporting |
| Knuckles | the rounded prominence formed by the ends of the two adjacent bones at a joint —used especially of those at the joints of the fingers |
| Acrobat | one that performs gymnastic feats requiring skillful control of the body |
| To rely on | to be dependent <the system on which we ~ for water> |
| Distinct | presenting a clear unmistakable impression <a neat ~ handwriting> |
| Bipedalism | walking on the two hind limbs |
| Approximate | nearly correct or exact <an approximate solution> |
| Hypothesis | a tentative assumption made in order to draw out and test its logical or empirical consequences |
| To share | to divide and distribute between a group of people : apportion |
| Dramatic | striking in appearance or effect <a ~ pause> |
| Tools | a handheld device that aids in accomplishing a task |
| Crude | rough or inexpert in plan or execution <a ~ shelter> |
| Axe | a cutting tool used especially for felling trees and chopping and splitting wood |
| To modify | to make minor changes in |
| Termites | any of numerous pale-colored soft-bodied social insects which are very destructive to wooden structures and trees |
| Nutritious | something that provides food or sustenance |
| Slender | spare in frame or flesh ; especially : gracefully slight |
| Observations | an act of recognizing and noting a fact or occurrence often involving measurement with instruments <weather ~ > |
| Composite tool use | using several different items together as tools. |
| Antler | the frontal bone on the head of an animal of the deer family |
| Mammals | f warm-blooded higher vertebrates, that nourish their young with milk secreted by mammary glands, have the skin usually more or less covered with hair, and include human |
| Offspring | the product of the reproductive processes of an animal or plant : young, progeny |
| Dependent | relying on another for support < ~ children> |
| To Wean | to accustom (as a young child or animal) to take food otherwise than by nursing |
| Incapable | lacking capacity, ability, or qualification for the purpose or end in view |
| To Provision | to provide with a stock of food |
| Predators | one that preys, destroys, or devours other animals |
| Mortality | the quality or state of being able to die |
| Rare | seldom occurring or found : uncommon |
| Monogamous | the state or custom of being married to one person at a time |
| Promiscuous | not restricted to one sexual partner |
| Paternity | the quality or state of being a father |
| Cooperative | marked by a willingness and ability to work with others < ~ neighbors> |
| Receptive | able or inclined to receive ; especially : open and responsive to ideas, impressions, or suggestions |
| Exchange | the act of giving or taking one thing in return for another : trade <an ~ of prisoners> |