Question

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Question
How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.(1 point)
Responses

The percentage of ordinary matter has grown in scientists' estimates.
The percentage of ordinary matter has grown in scientists' estimates.

The percentage of dark energy has shrunk in scientists' estimates.
The percentage of dark energy has shrunk in scientists' estimates.

The percentage of unknown material has grown in scientists' estimates since the 1970s.
The percentage of unknown material has grown in scientists' estimates since the 1970s.

The percentage of dark matter has shrunk in scientists' estimates since the 1980s

Answer 1

Based on the context provided and the scientific understanding of the universe's composition, the two correct responses would be:

1. The percentage of unknown material has grown in scientists' estimates since the 1970s.
2. The percentage of dark matter has shrunk in scientists' estimates since the 1980s.

The understanding of the universe's composition has indeed evolved, with increasing recognition of the amounts of dark energy and dark matter, while the percentage of ordinary matter remains relatively low.