Which of the following statements is true? OA. All changes made by organisms to their environments are beneficial.
B. All organisms cause changes in their environments.
OC. All changes made by organisms to their environments are detrimental.
OD
all of these

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.