3. A rock sample contains Tritium 3 which has a half life of 12 years. How many half-lives have passed after 48 years?

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia

Which statement best compares aerobic and anaerobic respiration