What's the answer to this question? The light propagates in a straight line and a shadow is formed behind the opaque bodies. This property of light explains:
1. The change of seasons
2. Solar and lunar eclipses
3. Why the moon shines
4. phases of the moon

i believe it would be c: tons.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.

1) a

2)c

3)a

4)c

5)b

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