The success of photosynthetic bacteria led to an increased oxygen concentration in Earth's atmosphere. These bacteria, through the process of photosynthesis, converted carbon dioxide and water into glucose and oxygen, significantly contributing to the rise of oxygen in the atmosphere during the Great Oxidation Event.
How did the success of photosynthetic bacteria change Earth’s atmosphere?(1 point)
Responses
increased hydrogen concentration
increased hydrogen concentration
increased oxygen concentration
increased oxygen concentration
decreased oxygen concentration
decreased oxygen concentration
decreased hydrogen concentration
5 answers
How did reduced methane concentrations in the atmosphere affect Earth?(1 point)
Responses
Volcanic activity decreased.
Volcanic activity decreased.
Volcanic activity increased.
Volcanic activity increased.
Earth cooled.
Earth cooled.
Earth warmed.
Responses
Volcanic activity decreased.
Volcanic activity decreased.
Volcanic activity increased.
Volcanic activity increased.
Earth cooled.
Earth cooled.
Earth warmed.
Reduced methane concentrations in the atmosphere caused Earth cooled. Methane is a potent greenhouse gas, and lower concentrations of it would lead to decreased heat retention in the atmosphere, resulting in a cooling effect on the planet.
Which option orders the events chronologically, from earliest to latest.(1 point)
Responses
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.
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.
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.
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.
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.
Responses
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.
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.
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.
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.
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.
The correct chronological order of the events from earliest to latest is:
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.
This sequence reflects the historical development of Earth's atmosphere and the evolution of life throughout geological time.
2 answers