The stem, I think. Hope it helps!
Answer:
the condition of a system when neither its state of motion nor its internal energy state tends to change with time.
or b partially
A wind turbind: <span>A </span>wind turbine<span> is a device that converts the </span>wind's<span> kinetic energy into electrical power. </span>Wind turbines<span> are manufactured in a wide range of vertical and horizontal axis types.
Wave turbine: </span>Wave<span> power is the transport of </span>energy<span> by wind </span>waves<span>, and the capture of that </span>energy<span> to do useful work – for example, electricity generation, water desalination, or the pumping of water (into reservoirs). A machine able to exploit </span>wave<span> power is generally known as a </span>wave energy<span> converter.
What they have in common is that they both produce energy.
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<span>Exocytosis, on the other hand, is Endocytosis
in reverse. The cell expels substances from the cell by way of a
vesicle and then fuses with the membrane. ... Additionally, during both Pinocytosis and Exocytosis, liquid vesicles known as Caveolae are used</span>