Answer:
D. 163.28mm
Explanation:
Circumference of a circle= 2πr where r is the radius
∴ 2×3.14×26= 163.48
Answer: The nitrogen cycle refers to the cycle of nitrogen atoms through the living and non-living systems of Earth. The nitrogen cycle is vital for life on Earth. Through the cycle, atmospheric nitrogen is converted to a form which plants can incorporate into new proteins.
D. Mountains
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