Brainliest will be rewarded if rite

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Describe the forces both attractive and repulsive that occur as two atoms move closer together.