English Language · English
Which choice completes the text with the most logical and precise word or phrase? Mônica Lopes-Ferreira and others at Brazil's Butantan Institute are studying the freshwater stingray species Potamotrygon rex to determine whether biological characteristics such as the rays' age and sex have ______ effect on the toxicity of their venom-that is, to see if differences in these traits are associated with considerable variations in venom potency.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1a substantial✓
- 2an imperceptible
- 3an acceptable
- 4a disconcerting
Correct answer
a substantial
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