The shape of the DNA molecule is called a double helix.
This is because the structure has four main chemicals that join together in specific patterns that looks like a double helix.
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A limiating factor is what limits the poupulation in an ecosystem. For example, biotic limiting factors include food, mates, shelter. Without these things the poupulation would decrease. becuse food, mates, and shelter are limited it limits the poupulation. an example of an abiotic limiting factor is a predetor. Predetors limit the poupulation of there pray.
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