Answer:
Oxygen
Explanation:
The earth has been divided into three major categories crust, mantle, and core which are further segregated into sub-parts. Since the crust is the outermost layer of the shell, the outer crust of the earth consists of a combination of silicon and oxygen in the majority followed by some percentage of other metals as well. <u>The percentage of Oxygen includes nearly 50% i.e. 46.6% followed by 27.7% of Silicon and the other 25.3 % includes aluminum, iron, sodium, magnesium, etc</u>. Thus, '<u>oxygen</u>' is the correct answer.
Moderate or severe Turbulence and Moderate or severe icing is the weather phenomenon is implied within an area enclosed by small scalloped lines on a U.S. High-Level Significant Weather Prognostic Chart
<h3>What is Weather?</h3>
Weather is the artmospheric condition of a place or location at a specific time.
<h3>What is moderate Or severe icing?</h3>
This occur in a place enclosed by small scalloped lines where freezing rain or ices drizzle fall through the cold air under the front.
<h3>What is moderate or severe Turbulence?</h3>
Moderate turbulence is more intense to light turbulence which is strong wind that blows but it is at minimal and controlled level compare to severe Turbulence. It doesn't cause loss of control of airplane.
Severe turbulence causes large changes in altitude or height .The airplane can move out of control.
Therefore, Moderate or severe Turbulence and Moderate or severe icing is the weather phenomenon is implied within an area enclosed by small scalloped lines on a U.S. High-Level Significant Weather Prognostic Chart.
Learn more on weather from the link below.
brainly.com/question/12455866
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Below are the choices. the answer is C.
A) mass extinctions, leading to bottleneck effect
B) major evolutionary innovations, leading to rafting to nearby continents
C) a variety of empty ecological niches, leading to adaptive radiation
<span>D) adaptive radiation, leading to founder effect</span>
Answer:
You should conduct more research and assume that the text book may have incorrect information!
Explanation:
