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Ratling [72]
2 years ago
8

Before there was any life on earth, which gas was absent from the ancient atmosphere?

Geography
1 answer:
mina [271]2 years ago
6 0
Oxygen was absent on earth
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Nataly [62]

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What is an air mass? O A. A mass of air that is similar in size and temperature. a B. A mass of air that is similar in temperatu
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Answer:

C. A mass of air that is similar in temperature and humidity

Explanation:

An "air mass" refers to a big volume of air that is characterized by having similar or uniform "temperature" and "humidity"<em> (moisture).</em> They come from different source regions, thus they are classified accordingly.

The<em> "cold air masses"</em> come from the <u>polar area</u>s while the<em> "warm air masses"</em> come from the<u> tropical areas.</u> An air mass may cause a storm, for example, when an air mass moves to a new region and confronts another air mass there with a<em> different humidity and temperature</em>.

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Which country was the site of ethnic tensions and a civil war between the Hutu and Tutsi in the 1990's?
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Rwanda (4) was the site of ethnic tensions and a civil war between the Hutu and the Tutsi in the 1990s. In early to middle 1994, the Hutu ethnic majority murdered nearly 800 thousand people, mostly from the Tutsi minority group. The act of attempting to annihilate an ethnic minority by an ethnic majority is known as a genocide. In Rwanda, the genocide began in the capital city of Kigali and spread throughout the rest of the country with lightening speed. It was a brutal and violent period in Rwandan history. 
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How can pesticide use be harmful to human agriculture?
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The Answer is (A)

Because the pesticide will kill off the bugs and weeds but will damage the soil so after the crops you have in the ground now just will not grow there again until 1 year after the pesticide has washed away
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Dimas [21]

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