Many early anthropoids have smaller eye orbits than earlier primates. The smaller eye orbits suggests they were

a. diurnal
b. arboreal
c. hunters
d. going blind


Answer: a. diurnal

Diurnality is a form of plant or animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal".

Biology & Microbiology

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