If a moving object loses mass, how can it keep its momentum constant?
A. by speeding up
It tells you that they descended from a common ancestor.
It is the “parent” generation, or the “paternal” one which the rest are observed from.
B and C are correct - A is incorrect as natural selection affects any generation of species. D is also incorrect as any species population change in an ecosystem inevitably affects another, even if it isn't a predator-prey relationship.
