The photoreceptors are most tightly packed into a specific part of the retina called the ________
A) optic nerve
B) fovea
C) ciliary body
D) choroid
B
Biology & Microbiology
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All cancers are caused by viruses
A. true B. false
Biology & Microbiology
Natural selection results in changes in ____
a. individuals b. populations c. kingdoms d. phyla e. animals only
Biology & Microbiology
Which is a unique adaptation in insects not found in any other arthropod?
a. wings b. cephalization c. segmentation d. hard exoskeletons e. specialized mouthparts
Biology & Microbiology
Which list represents the levels of organization in a multicellular organism from the simplest level to the most complex level?
a) organ system, organ, tissue, cell b) tissue, organ, organ system, cell c) Cell, tissue, organ system, organ d) cell, tissue, organ, organ system
Biology & Microbiology