Not much is known about how the earliest civilizations adapted to their environments except through their cultural habits (i.e. religion, games, etc). The Mayans took advantage of the surrounding rain forests and developed a very heavy agricultural and farming civilization, focusing in the cultivation of maize, beans, squash, peppers, avocado, and other important foods. They created a system for tearing down the rain forest in order to make room for their fields and left the watering of the plants up to the gods as they believed that the sun and rain were entirely divine. The Aztecs, however, settled in a more marshy land that was difficult to cultivate. Instead, they relied on military power and strength to conquer other civilizations and steal their food to keep their civilization alive. They did a bit of growing on their own, but not to the same scale as the Mayans, developing water ways and canals to transport goods from conquered cities to their capital.
<span>The correct answer is - nicotine can temporarily increase norepinephrine, a neurotransmitter scarce in people with depression.
Before Nathaniel started smoking, he was severely depressed, which is in part a biological thing (not only mental) due to his lack of norepinephrine. However, when he started smoking, his levels of this neurotransmitter rose, which is why he didn't feel as depressed as he used to be, but in turn, he became addicted to nicotine. </span>
Answer: Respect for persons
Explanation: Respect for persons is one of the fundamental principles in research. It is the recognition of a person as a autonomous, unique, and free individual. It also means that we recognize that each person has the right and capacity to make her or his own decisions. Respecting a person ensures that dignity is valued.
Answer:
it convinced many europeans to value logic and reason over religion and tradition
Explanation:
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