Which option orders the events chronologically, from earliest to latest.(1 point)

Question

Responses

Many new animal species evolve. Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere.
Many new animal species evolve. Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere.

Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve. Single-celled organisms increase atmospheric methane concentrations.
Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve. Single-celled organisms increase atmospheric methane concentrations.

Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve.
Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve.

Single-celled organisms increase atmospheric methane concentrations. Oxygen concentrations increase in the atmosphere. Photosynthesizing bacteria release oxygen into the sea. Many new animal species evolve.

Answer 1

To determine the correct chronological order of the events, we should look at the biological and ecological history involved. Here's the logical progression of the events:

1. Single-celled organisms increase atmospheric methane concentrations - Early life forms, particularly anaerobic bacteria, were probably present before photosynthetic organisms and created methane.
2. Photosynthesizing bacteria release oxygen into the sea - Next, photosynthetic bacteria (like cyanobacteria) started producing oxygen through photosynthesis.
3. Oxygen concentrations increase in the atmosphere - Over time, as oxygen produced by photosynthetic bacteria accumulated, the atmospheric oxygen levels started to rise.
4. Many new animal species evolve - Finally, with a suitable atmosphere and more complex life forms, many animal species began to evolve.

Given this reasoning, the correct chronological order is:

Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve.

Thus, the correct response is: Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve.