The answer is B. Abiotic features are usually the non living factors that influence the ecosystem
B, dam removal allows streams to connect the mountains to the ocean.
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A is yours answer I think
Brain cells change shape when cognitive deterioration happens and when it happens in the arm the cells have been strained
1. Helicase unwinds the parent DNA strand
2. Single-stranded binding proteins prevent the strands from snapping back to the original DNA structure
3. RNA primase synthesizes RNA primer which attaches itself at the initiation point
4. Polymerase begins synthesizing the new strands
5. Ligase joins the okazaki fragments