Answer:
probably because most of our food comes from animals-
Explanation:
PH = -log10 [H+]. So anwer 2 pH
First use this equation to find the wave speed: vms== =τµ/ 0.4/ 0.001 20 / Then use the equation for solving frequency of a wavelength, and solve for wavelength λ = v/f = 20/100 = .2 m = 20 cm.