How have scientists learned about extinct species?

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.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Write down two additional questions about earth's magnetic field that will make your presentation more informative.