Vertebrates, sexual reproduction, and fusion
Answer:
the answer is A
Explanation:
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When tiny ice crystals in clouds stick together to form snowflakes, the result is snow. If enough crystals form a clump, they'll become heavy enough to fall to the ground. When temperatures are cold and moisture in the form of tiny ice crystals exists in the atmosphere, snow forms.
<span>Back bone of nucleic acid is made up of phospodiester bonds that exist between successive pentose sugar molecules of nucleotides.</span>
