DNA helicase untwists the helix at the replication origins. Then the DNA is seperated into a "Y" shape called the replication fork.
The end of the Triassic period was possibly caused by the large (a) rift zone that developed due to Pangaea breaking up.
Answer:
neuron is your answer ok mark me brainlest
Cellular respiration i believe
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3. Plant cells are arranged in tight squares due to their cell walls and are filled with water. These characteristics give the plant a structural support.