A. Oxygen
B. Cabon Dioxide
C. Silicon
D. Clay
Check Answer
The correct answer is A) Oxygen.
Detailed Answer:
About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is oxygen. Oxygen is the most abundant element on Earth, making up about 21% of the Earth’s atmosphere and about 46.6% of the Earth’s crust. It is a highly reactive element that is essential for life and is involved in a wide variety of chemical reactions. Oxygen is a gas at room temperature and is a component of many compounds, including water, carbon dioxide, and silicon dioxide.
Clay is a fine-grained soil composed of minerals that are rich in aluminum and silicon. It makes up a small portion of the Earth’s crust, but it is not as abundant as oxygen.
Carbon dioxide and silicon are also present in the Earth’s crust, but they are not as abundant as oxygen.
Detailed Answer:
About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is oxygen. Oxygen is the most abundant element on Earth, making up about 21% of the Earth’s atmosphere and about 46.6% of the Earth’s crust. It is a highly reactive element that is essential for life and is involved in a wide variety of chemical reactions. Oxygen is a gas at room temperature and is a component of many compounds, including water, carbon dioxide, and silicon dioxide.
Clay is a fine-grained soil composed of minerals that are rich in aluminum and silicon. It makes up a small portion of the Earth’s crust, but it is not as abundant as oxygen.
Carbon dioxide and silicon are also present in the Earth’s crust, but they are not as abundant as oxygen.
