Answer:
Around 4.1 billion years ago, the first single celled life form appeared on Earth
The nervous system.~~~
And in the nervous system is the nucleus.....the organelle responsible.
And inside the nervous system is the RNA and DNA that helps sending the information.
The choice that best shows various types of genetics material in order from simplest to most complex is A.
The answer is B because A goes with T, C goes with G and G goes with C
Neutral atoms….? I think this is correct