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.
Pravda, (Russian: “Truth”) newspaper that was the official organ of the Communist Party of the Soviet Union from 1918 to 1991. After the collapse of the Soviet Union, numerous publications and Web sites continued under the Pravda name.
D. Chinese government officials were selected based on their abilities rather than their family history.
Answer: These phrases refer to the Age of Imperialism.
