Suitable for grades K-12. Back to Top Click on any of the vocabulary words below to hear them pronounced and used in a sentence. The condition of having two feet or of using only two feet for locomotion. In trees, brachiating is a more efficient form of locomotion than bipedalism. The arrangement of genes on a chromosome.
Genetic maps can show evolutionary relationships.
One of the earliest signs of human arrival is hominid imprints dating back 3.5 million years. The ecological role of an organism in a community, especially in regard to food consumption. Ecological niches were filled with a variety of primates. A treeless plain. A savanna is a tropical grassland with seasonal rainfall and drought and adapted scattered bushes and other plants.