Photovoltaic cells.
While semiconducting material such as silicon, the other a metal such as aluminum or silver.
It increases by the population growth whic causes more variation
Answer:
Block of modeling clay is placed under three heavy blocks, and a hot plate covered by a tray.
Explanation:
Block of modeling clay is placed under three heavy blocks, and a hot plate covered by a tray is used for forming a metamorphic rock. Metamorphic rocks are formed when the rocks are placed to high heat, high pressure, hot mineral-rich fluids or combination of all these three factors. Conditions like these are found deep within the Earth so by placing block of modeling clay is placed under three heavy blocks, and a hot plate covered by a tray formed metamorphic rock.
