Eight grade students are classifying stars by physical properties. They already learned that Betelgeuse is a cool, bright star. Which of the following are additional physical properties that could be used by the students to classify Betelgeuse?

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.