What causes wind? A. differences in land elevation on a continent B. the angle at which the rays from the sun hit the atmosphere C. air flowing from a high pressure area to a low pressure area D. gravity pull caused by the moon moving farther away from the earth

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.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer