Answer:
B. active volcanoes
Explanation:
Mexico City and San Salvador are both adjacent to <u>active volcanoes</u>.
Most European immigrants who came to the United States found places to settle and work to support their families because they formed colonies in the unpopulated areas of the country.
<h3>I am an Irish immigrant in the United States, what characterizes me?</h3>
I am an Irish immigrant who came to the United States in the 1850s to this country in search of new opportunities because of a great famine in my country.
The famine caused many of my neighbors and compatriots to travel together to the United States. When we arrived, we formed several neighborhoods in different states where we were able to find jobs, housing, and education for our families.
The relationship with the Americans has not been bad, they have received us in a good way and have adopted some of our customs such as Saint Patrick's Day. In addition, our musical customs have influenced several American rock groups.
Learn more about immigration in the United States in: brainly.com/question/20699843
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Aztecs irrigated and reclaimed swampland so that they could farm.
<u>Explanation</u>:
Aztec refers to people of Central Mexico speaking Nahuatl. The Aztecs were known for introducing irrigation, agriculture and cultivating the land. These people involved in draining swamps and creating artificial islands in the lakes. The artificial island is used for farming.
Aztecs were involved in building pyramids and temples. They learned irrigation to change their habits. Farming became their major occupation. Hieroglyphic writing was introduced by Aztecs. Complex calendar system was implemented and used by Aztecs.
Answer:
(3) protons
Explanation:
Magnetic fields are produced by charged particles in motion. Let's analyze each option:
(1) x rays --> they consist of photons, which are neutral particles, so they don't produce magnetic fields
(2) gamma rays --> they consist of photons, which are neutral particles, so they don't produce magnetic fields
(3) protons --> protons are charged particles, so they can produce magnetic fields if they are in motion
(4) neutrons --> neutrons are neutral particles, so they don't produce magnetic fields
