How does time affect soil

Which of the following are guidelines to follow for obtaining accurate observations

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? your

Explain why you think this diagram shows what happened to the carbon in the biodome.