DNA is used for replication in cells, the replication is called Semi conservative. Tis is when two strand of DNA are used as a code for a new DNA molecule.
They absorb photons from sunlight
They will start to adapt to life on the island
Performing a cut (also known as earthmoving)
This is actually not a question. You are going to have to re-read it. If you are asking it as a question it will look like this: "When a rigid body rotates about a fixed axis, do all the points in the body have the same angular acceleration?"