What would result for global climate from a massive drop in atmospheric carbon dioxide?
A. An increase in ocean temperature
B. Increased nitrogen availability
C. Increased rock weathering
D. A decrease in surface temperature
E. A decrease in free oxygen content
Answer: D
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Active transport would be LEAST important in the normal functioning of which of the following plant tissue types?
A) leaf transfer cells B) stem tracheids C) root endodermal cells D) leaf mesophyll cells E) root sieve-tube elements
Countershading is a common form of camouflage in ____ fishes
a. coral reef b. eel grass bed c. pelagic d. deep sea
While on an archaeology expedition, you unearth a skeleton with the following characteristics: four long, slender finger bones and a smaller opposable thumb bone, long arm bones, fingernails, and eye sockets close together on a skull
What type of organism do you suspect you may have found? A) an anthropoid B) a tarsier C) a crustacean D) a marsupial
Select all of the following that represent examples of taxis.
A. Mammalian spermatozoa are guided toward an oocyte by a temperature gradient between the cooler sperm storage site and the fertilization site. B. In the Northern Hemisphere, Aquaspirillum bacteria burrow towards the magnetic north pole (the geographical south pole). C. Human body lice change direction more frequently as the temperature of their immediate environment increases. D. Cyanobacteria filaments in an intertidal environment migrate upward if salinity falls below 15% and downward if it rises above 15%.