Jeremy is trying to save money for college. he saves half of the money he earns from his part-time job. he has set a goal to save enough money to pay for his dorm fees for his first year. these behaviors demonstrate that jeremy's cortex has matured.

prefrontal cortex

Explanation:

According to my research on studies conducted by various psychologists, I can say that based on the information provided within the question Jeremy's prefrontal cortex has matured. The prefrontal cortex is a part of the brain which is located in front of the frontal lobe. Its main function includes managing complex behaviors, including planning, and greatly contributing to personality development.

I hope this answered your question. If you have any more questions feel free to ask away at .

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.