A friend is having a problem with keeping a fish tank at the right temperature so the fish stay healthy. Describe how you could use at least one type of input and one type of output to create a physical computing device to help this friend.
We can connect a temperature sensor connected to the water and a heater or cooler sensor, we have created a program to check the temperature from the sensor.
when the water is hotter than recommended, we turn on the refrigerator and when it is cold, we turn on the heater
so correct answer is water temperature gauge sensor
