The source of electromagnetic waves is . vibrating atoms

magnetic fields

electric fields

vibrating electric charges

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

With i really need the correct answer!

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.