The correct answer *(to whoever may need it in the future)* is actually:
Purity is to timbre as frequency is to pitch.
The statement that "birds build nests to keep the egg warms" describes a result.
The scientific method refers to an arrangement of steps succeeded by scientific investigators to answer particular questions regarding the natural world. It includes making observations, creating a hypothesis, and conducting scientific experiments.
The steps of the scientific method are observation, question, hypothesis, experiment, results, and conclusion. The result illustrates when one report what took place in the experiment. This comprises detailing of all the data and observations made at the time of the experiment.
Passive transport. Uses no ATP
A. translation
hope this helps :)