What does darwin’s theory of evolution explain about the natural world?

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

Environmental differences within ecosystems are generally caused by