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

Question

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

Answer 1

The two correct answers regarding how scientific understanding about the composition of the universe has changed over time 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.

(Note: The third option about ordinary matter has generally tended to remain relatively stable, and the percentage of dark matter has not shrunk significantly in estimates since the 1980s.)