They have no soft tissues in there body.Ignore my answer it wrong.
Answer:
The Sun is completely blocked in a solar eclipse because the Moon passes between Earth and the Sun. Even though the Moon is much smaller than the Sun, because it is just the right distance away from Earth, the Moon can fully blocks the Sun’s light from Earth’s perspective.
Explanation:
Every time a volcano erupts, the magma always cools down and turn into igneous rocks. Metamorphic rocks are created underground due to heat, pressure and time. The production of these rocks will always continue unless an extreme phenomenon causes all volcanoes to go dormant forever and the earth's crust disappears. Lol