What's the independent and the dependent variable ??

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth

This question is only for applicants to scholars for medicine or scholars for dental medicine: what aspects about medicine (or dental medicine) intrigue you? describe how these aspects influence your life. (100-650 words)

Which of the following is a testable hypotheses?