Which best describes how air temperature is related to high- and low-pressure air? a. cool air forms low-pressure areas, while warm air forms high-pressure areas. b. cool air near the surface forms high-pressure areas, warm air forms low-pressure areas. c. high-pressure air makes other air warmer, low-pressure air makes other air cool. d. temperature is not related to air pressure, only to humidity.

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

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.