NO LINKS What controls circadian rhythms in humans? Explain how this process works.

The circadian rhythms are controlled by a part of the brain called the Suprachiasmatic Nucleus (SCN), or a group of cells in the hypothalamus that responds to light and dark signals. Thid happens when our eyes perceive light, causing our retinas send a signal to our SCN.

the correct answer in apex is tissue development, i know because i just had this question

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: