Random distribution of individuals in a population occurs when resource availability is ____ and individuals ____ one
another.
a. scarce; attract
b. clumped; neither attract nor avoid
c. random; avoid
d. uniform; neither attract nor avoid
e. scarce; avoid
ANSWER: d
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Which of the following is not true about the cytotoxic T cell response?
What will be an ideal response?
During which time period did the animal in the accompanying figure appear?
a. Jurassic
b. Triassic
c. Permian
d. Devonian
e. Cretaceous
Which of the following pairs are the best examples of homologous structures?
A) bones in the bat wing and bones in the human forelimb B) owl wing and hornet wing C) bat wing and bird wing D) eyelessness in the Australian mole and eyelessness in the North American mole
If you lay your forearm along the table, you can rotate it so that your hand changes from a palm-down to a palm-up position. This is possible because your radius and ulna join at a ________ joint
A) ball-and-socket B) hinge C) pivot D) twist