DNA replication begins when something called Helicase (an enzyme) unwinds the helix structure of the DNA. It does this so that Primase can then come along and set down an RNA primer.
The answer is a because it just is
Answer:
Taking shorter showers
Don't leave appliances running if you're not using them
Turn off lights after leaving a room
Eating less meat
Using renewable energy/ resources
Driving less
