The earliest ancestors of about half of all extant animal phyla can be traced back to the explosion. see concept 32.2 (page 675)

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic