Hi pls answer i will give brainiest

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

How long could you survive without electricity? what parts of your life would be affected by loss of electricity? should you prepare for an electricity outage, and if so, how would you prepare? what backup system could your family or community install to generate limited amounts of electricity during an outage? how does this system create an electric force field and generate electric current?

Assume you inhale in about 6 l of air per minute how much nitrogen do you breathe in one minute