The correct option is D. Volcanic eruption released large amounts of water vapor into Earth's early atmosphere.
Earth’s first atmosphere had lots of water vapor but it almost lacked oxygen. Eventually, frequent volcanic eruptions put several different gases into the air. These gases created a new type of atmosphere for Earth. The volcanic eruptions spewed gases such as nitrogen, carbon dioxide, hydrogen, and water vapor into the atmosphere, but no free oxygen. Without oxygen, there could not be life on Earth.
De Soto is the explorer that discovered the Mississippi River.
(5a - 2a) +3
Collect terms: 5a -2a = 3a
3a +3 is the answer because 3a can’t be added to 3 as it’s on its own.
Light energy is quantized
<span>It
means that even though light is a wave, it nevertheless exists in
discrete (distinct, countable and indivisible) units, i.e. particles</span>
Answer:
The Roman Army benefited from the roads that were constructed. It enabled them to move quickly throughout the Roman Empire.
Explanation:
The Romans built 50,000 miles of hard-surfaced highway, the Roman road system consist of 80,000 km that extend from Europe to North Africa.
The Roman Army benefited from the roads that were constructed. It enabled them to move quickly throughout the Roman Empire which was one of the largest Empire in the world that covers three Continent which includes Europe, the Asia and Africa. The roads also helps in Roman expansion of its territories.
The first person to start the contruction of road in the Roman empire was Appius Claudius Caecus in 312 BCE. Although the roads were greatly use by the Roman military, it was also use in the transportation of commerce and communication that were key in maintaining the empire.
