Answer:A
Explanation:it’s being change by a mixture of substances put together
mitochondria and the Golgi apparatus i hope that's helps
Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. Sunspots usually appear in pairs of opposite magnetic polarity.
The answer to this is passive hyperemia.