The answer is the last option "Respiration"
Newton’s Second Law concerns the generation of force based on an object’s mass and acceleration, as described by the equation F=ma.
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Answer:
mantle
Explanation:
Below the crust lies a layer of very hot, almost solid rock called the mantle. Beneath the mantle lies the core. The outer core is a liquid mix of iron and nickel, but the inner core is solid metal. Sometimes, hot molten rock, called magma, bursts through Earth's surface in the form of a volcano.
Noble gasses ( insert gases)
Both equinoxes ... September 21 and March 21.
