Some interactions lead to which occurs when organisms in an environment rely on each other for resources. an example of this concept is which occurs when two species require the same limited resource, such as food, water, shelter, or sunlight. another example is which occurs when one species benefits from the interaction and the other species is neither harmed nor .

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.