what would generally be the most reliable, valid, and unbiased form of empirical evidence for a scientific idea?

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.