Galaxies Unit Review Practice The universe's galaxies have evolved since what point in time? (1 point)
O 13.8 billion years ago, right after the universe first formed
O approximately 50 million years ago after initial clumps of material were formed
O 23 4 billion years ago, when the universe first formed
O 800 million years ago, when gas concentrations were optimal for galaxy formation

Which statement explains which component is likely to be more powerful in explaining a scientific phenomenon? a) component c, because a theory is often passed on possibility and not certainty b) component d, because a hypothesis is often based on possibility not certainty c) component c, because the ability to explain several occurrences in the natural world is a characteristic of a hypothesis d) component d, because the ability to explain several occurrences in the natural world is a characteristic of a theory