Changes in dna are known as mutations and can be sometimes produce beneficial changes in population. a mutant form of the normally light-colored peppered moth is dark-colored. the dark-colored moth blends in with soot-covered trees in heavily polluted areas. why would the dark-colored mutation be beneficial in a polluted area?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

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 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=