Which ecosystem is the least stable?

A rain forest on a small island

B savanna on a large volcanic island

C vast coral reef in a warm ocean

D patch of lichens on bare rock

Most genetic variation in a population is generated by mutation. gene flow. genetic drift. none of the above

Which piece of equipment would you most likely use to study a unicellular organism? A) ruler B) test tube C) stopwatch D) microscope

The formation of HCI in the stomach involves the Select one: a. active transport of hydrogen ions from parietal cells into the lumen of the stomach. b. exchange of sodium ions for hydrogen ions in the transport process. c.

Single celled microorganisms are sometimes called simple organisms why is this inaccurate

What is one reason the process of fracking has increased in the united states A) The population decreased and demand for energy resources has increased B) The population has increased and so had demand for energy resources C) The population has

How many chromosomes do humans have? how many copies in normal cells? How many pairs? How many copies in sex cells?

How many times has blastopore fate changed over the course of evolution? -o times -1 time -2 times - multiple times

What is unique about the water near Antarctica? How does it drive global ocean circulation?

A physician examines a patient who complains of breathing problems. She finds fluctuations in the patient's blood pressure and heart rate. The physician thinks it's because of a brain injury. Which part of the brain is affected? A. Cerebellum B.

In natural selection what determines which color grey or green is advantageous