Question

How does volcanoes form and how many types of volcanoes are there ?​

Answer 1

How do volcanoes form?

Deep inside Earth, between the molten iron core and the thin crust at the surface, there is a solid body of rock called the mantle.

Volcanoes are grouped into four types:

• Cinder cones
• Composite volcanoes
• Shield volcanoes
• Lava volcanoes

Hope it helpzzz you well

Answer 2

Answer:

Photodynamic therapy, is a form of phototherapy involving light and a photosensitizing chemical substance, used in conjunction with molecular oxygen to elicit cell death. PDT is popularly used in treating acne.

Good morno bestu xD