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neonofarm [45]
3 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]3 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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Answer:

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Explanation:

Brown hair color (B) is dominant over blonde hair color (b).

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The correct answer is  1:1 (brown:blonde).

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