In order for homeostasis to be maintained a(n) ________ must detect a specific stimulus
a. affector
b. sensory receptor
c. gland
d. sensory affector
e. effector
b
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Escherichia coli bacteria in your colon are best categorized as _______________
A. photoautotrophs B. chemoheterotrophs C. photoheterotrophs D. chemoautotrophs E. chemolithotrophs
Compared to life in the water, what was one benefit to a transition to living on land 450 mya?
A. easier to withstand gravity B. easier to find pollinators C. less CO2 D. easier access to water E. more abundant sunlight
Antibodies are
A. forms of vaccines B. type of cells that protect the body C. viruses that cause diseases D. foreign substances that stimulate an immune response E. proteins that protect the body
Which person might have the greatest influence on reducing greenhouse gas emissions in industrial, commercial, and agricultural sectors?