What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth?

The sequence will be:

4. Origin of cyanobacteria

3. Origin of chloroplasts

2. Origin of multicellular eukaryotes

1. Origin of Chloroplasts

5. Origin of fungal/plant symbioses

Explanation:

1. origin of mitochondria : Mitochondria is thought to be originated more than more than 1.45 billion years ago.

2. origin of multicellular eukaryotes : They actually evolved from unicellular eukaryotes at least over 1.7 billion years ago

3. origin of chloroplasts : Its origin is traced to as far back as 600 to 2 billion years ago

4. origin of cyanobacteria : They originated about 2.45 - 2.22 billion years ago.

5. origin of fungal/plant symbioses: DNA sequence and fossil evidence suggests that they originated around 400-460 million years ago