Observe the above time line and answer the following questions. 1) How many years ago was the Earth formed? 2) Arrange the following based on their formation: Corals, Bacteria, Birds, Insects, Sponges and fungi

It looks like the timeline mentioned in "Fig. 4.1" is not visible in the image provided. I will answer based on general scientific knowledge.

1. How many years ago was the Earth formed? The Earth was formed approximately 4.54 billion years ago. Answer: $\boxed{\text{4.54 billion years ago}}$

2. Arrange the following based on their formation: Corals, Bacteria, Birds, Insects, Sponges and fungi Arranging these organisms from earliest to most recent appearance in the evolutionary timeline: Answer: $\boxed{\text{Bacteria, Fungi, Sponges, Corals, Insects, Birds}}$