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neonofarm [45]
2 years ago
15

2. How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.

Biology
1 answer:
mart [117]2 years ago
6 0

Answer: The percentage of unknown material has grown in scientists estimates since the 1970’s; the percentage of dark matter has shrunk in scientists estimates since the 1980s

Explanation:

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