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Answer:
B. hydrogen bond
Explanation:
The double helix is held together by hydrogen bonds between the bases
It's <span> called an autotroph or</span><span> heterotroph</span>
Answer: solar radiation
Explanation: Energy released from the Sun is emitted as shortwave light and ultraviolet energy. When it reaches the Earth, some is reflected back to space by clouds, some are absorbed by the atmosphere, and some is absorbed in the Earth's surface Shortwave radiation reflected back to space by clouds.
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