If a sea urchin is exposed to sea water that has a lower pH; in other words is more acidic, how will it be affected?

Which type of organism most likely evolved first? A. Simple prokaryotes B. Simple eukaryotes C. Archaea with simple DNA D. Multicellular prokaryotes

Which of the following metabolic processes releases hydrogen ions into body fluids? a. Anaerobic respiration of glucose b. Incomplete oxidation of fatty acids c. Oxidation of sulfur-containing amino acids d. Aerobic respiration of glucose e.

This occurs when the members of a population are reproducing at a constant rate

climate has changed in the past due to A. earthquakes and D. milankovitch cycles B. air pollution E. global warming C. plate tectonics F. lunar phases

Which of the following is a requirement for a population to be in Hardy-Weinberg equilibrium? A. Immigration must outpace emigration. B. One allele must provide a benefit. C. No mutation can take place. D. The population must be very small.

What is the hawaiian islands formed by one or several of these which bring new rock to the surface of earth?

Adolescents (ages 12-18) experiment with and develop a sense of who they are and what roles they want to play. What is the primary developmental task of this stage?

When did most marine life go extinct?

Phosphorescence is a phenomenon associated with which algal division

What are potential sources of error in a experiment?