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

Responses

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

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

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

1 answer

The two correct answers regarding changes in scientific understanding about the composition of the universe are:

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

These selections reflect the evolving comprehension of the universe's makeup over time, particularly concerning dark matter, dark energy, and the classification of unknown materials.