Legumes contain nitrogen-fixing bacteria in their roots that increase soil nitrogen for use by other species. This is an example of

Recalling the definition of long-term memory is an example of ________ memory.

Your teacher has given each student the name of a key figure in the history of psychology. The assignment is to describe at least one significant contribution made by this person. If your historical figure is Hermann Ebbinghaus, what contribution might you describe to the class?

Which of the following is NOT an example of a resource?

Which of the following species belong to the same guild?

What accounts for the pyramid shape of the diagram that represents energy in trophic groups in an ecosystem?

Tight coevolution between flower and pollinator morphology (only one species of pollinator can pollinate one species of plant) will likely occur when:

In the mutualism between corals and zooxanthellae (microscopic algae), the coral dies if the algae is expelled, a phenomenon known as coral bleaching. Different coral species can be colonized by multiple species of algae. From the perspective of the coral, the type of mutualism is:

A study hypothesized that the amount of scales and mucus of different species of fish eaten by cleaner fish would depend on the abundance of parasites in their oral cavities. Based on their results apply a t test and answer the following questions   Low abundance of parasites High abundance of parasites Average mucus and scales consumed (%) 23 18 Variance (s2) 14 12 Number of fish sampled 21 21 What is the T value calculated?    

                . ‘  .           ‘ .( ‘.) – ‘     _   (` `)-‘ `’. -) ‘     | (- -(. CONDITIONALS (-) ‘  .–`+’-. .’ [PARSONS] ) .  |`—-‘|   (‘ .) – (‘. ) `  | /..\ |    . (‘ `.  )   |\./\.\|      ` .  `   |./G \/|  |.\ T/.|  `-._/.-‘ .