The directional movements of the ocean currents are mainly due to the ________
a. force of the wind
b. amount of rainfall the region receives
c. distance to the sun
d. depth of the water
e. temperature of the water
a
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In Tilman's experiments with diatoms, what was the outcome when the two species competed for silica?
A) Both coexisted. B) Both survived several years but one eventually won out. C) One outcompeted the other to extinction. D) Both died.
Ligament number and location
What will be an ideal response?
Identification of bacteria in the laboratory usually begins with the ________ for placement in one of two large groups of bacteria
A) Koch's stain B) Gram stain C) Pasteur fermentation test D) Petri stain E) Ehrlich magic test
All of the following statements regarding stem cells are true, EXCEPT
A. Embryonic stem (ES) cells differentiate into pluripotent cells. B. Pluripotent stem may be reverse-engineered from adult stem cells. C. Totipotent stem cells differentiate into embryonic stem cells. D. Totipotent stem cells may differentiate into placental cells. E. Totipotent stem cells may only be harvested from the blastocyst stage.