Davahl is interested in tortoises because they can live for over a hundred years and have unique metabolisms. she wants to perform an experiment to see if they can live even longer with a specific nutrient supplement. davahl is given a five-year research grant to perform her experiment. which is the most likely practical limitation that davahl is having with performing her experiment?

time
ethics
money
technology

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.