An organism is found to be almost unchanged from its 200 million year old fossil. This is an example of ____.
A. stasis
B. coevolution
C. mass extinction
D. adaptive radiation
E. idealized design
Answer: A
You might also like to view...
Which of the following human diseases is linked to a class of Epsilonproteobacteria?
A. Guillian-Barre Syndrome B. Diarrhea C. Stomach ulcers D. Gastric cancer
Which of the following is not true of enzyme behavior?
1.Enzyme shape may change during catalysis. 2.Enzymes cannot make something happen that would not happen on its own. 3.All enzymes have an active site where substrates are temporarily bound. 4.Each enzyme can catalyze a wide variety of different reactions. 5.Enzymes speed up reactions.
The phospholipid molecules of most membranes have
a. a hydrophobic head and a hydrophilic tail. b. a hydrophobic head and a hydrophobic tail. c. a hydrophobic head and two hydrophobic tails. d. a hydrophilic head and two hydrophobic tails. e. two hydrophobic tails.
The unit of measurement in an ecological footprint is the ___
a. carbon hectare b. global unit c. global hectare d. ecological hectare e. a and d