Question

darwin stated that all species have descended from other species with modifications over time. what does this mean? all life shares a common ancestor. most life started out in the oceans. plants and animals have co-evolved.

Explanation:

Darwin's theory of evolution by natural selection implies that all species are related and have descended from a common ancestor. Over time, through processes like natural selection, species have accumulated modifications (changes) that have led to the diversity of life we see today. The option "Most life started out in the oceans" is more about the origin of life's location rather than the descent - with - modification concept. The option "Plants and animals have co - evolved" is a specific aspect of evolution but does not capture the overarching idea of all species descending from a common ancestor.

Answer:

All life shares a common ancestor.