What is the difrerence between electomagnetic wave and a mechanical wave

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

In an experiment, how can i change human errors? be specific.