Based on several research studies <u>body clock</u> governs peak periods for learning new and challenging academic material.
<h3>What is a body clock?</h3>
The <u>Body clock,</u> established on circadian rhythm, maintains the body processes to function based on a schedule.
Research has shown that the <u>Body clock</u> assists the body to regulates the timing of processes like eating, sleeping, and temperature.
Through body clock, it has been observed that most people perform best in the late morning to learn new and challenging academic material.
It is believed that during this period, humans working memory, alertness, and concentration steadily improved.
Hence, in this case, it is concluded that the correct answer is <u>Body Clock.</u>
Learn more about <u>Body Clock</u> here: brainly.com/question/4169296
About one-third increase to the size of the United States. The states of Nevada, Arizona, California, Utah and some parts of New Mexico and the Gadsden purchase completes the southern parts of Arizona and New Mexico. This land is from Mexico acquired by the United States.
The Black Death killed millions of millions of people which lowered the population