Living things are made up of very complicated molecules. why is carbon important for forming these complicated molecules. a it forms very strong bonds b it can form an ionic bond with itself c it can form six covalent bond d it forms very weak bonds. : )

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.