The area monitored by a single receptor is called
a. neural area
b. receptor field
c. receptive field
d. receptor specificity
e. receptor modality

I think the answer is C.

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volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).