Convection currents<span> are </span>caused<span> by an uneven temperature within something. </span>Convection currents<span>happen within the Earth's magma, water and air. It can happen in anything that is not solid and has parts that are cooler or warmer than other parts.</span>
mech advantage = load/effort = 275/63=4 and a bit
mech adventure ???
Answer:
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C. Frequency is a measure of how many waves pass by in one second.
