Credible sources always identify the author. select the best answer from the choices provided t f

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?