Answer:
The earliest time that life forms first appeared on Earth is at least 3.77 billion years ago, possibly as early as 4.28 billion years, or even 4.5 billion years; not long after the oceans formed 4.41 billion years ago, and after the formation of the Earth 4.54 billion years ago.
Explanation:
Homologies. These determine if there are any similarities. Such as the wings on a butterfly to a bird.
The slender filaments under the mushroom cap are called hyphae.