The rate of a reaction is the speed at which products form or reactants disappear.
t/f

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Asample of a gaseous substance changes into a liquid

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.