8.How long is a day? A year?

Explain what happens at the saturation point when adding salt to water at room temperature.

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

List and describe three ways that humans can change ecosystems and three ways that humans can protect ecosystems.