Why did scientist reject lamarck's idea of evolution?
a. organisms have not changed through earths history.
b. organisms cannot change their characteristics during their life time.
c. traits acquired during a lifetime are not passed through offspring.
d. traits acquired during a lifetime are of no use to an individual.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.