Which of the following is a constant gas in the atmosphere?

question 37 options:

carbon dioxide

ozone

oxygen

nitrogen oxide

The constant gas in the atmosphere is oxygen

Explanation:

Oxygen is what allows the maintenance of life in this planet, therefore, it is the  constant and needed gas in the atmosphere. Ozone is present and should be present in the highest layers of the atmosphere. Carbon dioxide is also present in the atmosphere due to the carbon cycle. Nitrogen oxide should not be in the atmosphere. The reason why carbon dioxide, ozone and nitrogen oxide are constantly found in the atmosphere is due to air pollution.

there's multiple reasons why the conquistadors were so successful in colonizing central america, and some of them are:

- they were seen as gods;

at the beginning, the spanish settlers were seen by the natives as gods, and this was mainly due to their white skin, and the way they came with their boats.

- possessed superior weaponry;

the spanish had gunpowder and guns, as well as cannons, while the natives did not had any fire weapons.

- made cleaver alliances;

they used the situation of tribes hating each other, so they made alliances with some of them which served them very well.

- brought diseases;

the native people were not immune to certain diseases the europeans brought with them, so they were dying from seeming harmless things for european standards.