The best control for your experiment in the question above is a tree in which you __________ and you measure the abundance of _____________ over time. remove the ants and the aphids; other insects
A. do not remove any insects; ants
B. do not remove any insects; aphids
C. add a second ant species; the first ant
species
D. Actually, the control is built into the original
experiment; you do not need to set up a
separate control.
B
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Approximately how many nerve cells does a human have?
A. 10 million B. 100 million C. 10 billion D. 100 billion E. We do not have a good estimate.
Which of the following is NOT a characteristic
of a stolon?
a. they are found on strawberries b. they have nodes c. they originate from roots d. they grow above or below ground e. more than one of these is NOT a characteristic of a stolon
From this age structure diagram for India, it is likely that India’s population will ____
a. crash b. have a larger proportion of older individuals c. remain stable d. decrease e. increase
Which of the following would have the highest productivity?
A. desert B. tundra C. temperate deciduous forest D. the open ocean