Which of the following is a key difference between the synapsids, anapsids, and diapsids?

a. premaxillary fissure
b. presence/absence of pterygoid
c. temporal fenestrae
d. supraorbital notch


c. temporal fenestrae

Biology & Microbiology

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In the Northern Hemisphere, recall that atmospheric CO2 levels are highest in early spring and lowest during early fall. What accounts for this seasonal fluctuation in atmospheric CO2 levels? Select all that apply

A. photosynthesis B. human activities C. respiration D. biomineralization E. plate tectonics

Biology & Microbiology

For mechanisms of sex determination, which of the following is incorrectly paired?

A. X-Y, cow B. X-O, grasshopper C. ZZ-ZW, bluebird D. 1n-2n, pea plant E. high temperature-low temperature, alligator

Biology & Microbiology

Which would create a more acute dietary shortage for human beings: the loss of monocot crops or the loss of dicot crops?

What will be an ideal response?

Biology & Microbiology

Upon release from rehabilitation, fire fighters should _____.

a. be medically evaluated b. report for reassignment c. be released from the scene d. return to their previous assignment

Biology & Microbiology