Mount Rainier is a massive stratovolcano located 54 miles southeast of Seattle in the state of Washington, United States.

Puʻu ʻŌʻō is a cinder/spatter cone in the eastern rift zone of the Kīlauea volcano of the Hawaiian Islands. Puʻu ʻŌʻō has been erupting continuously since January 3, 1983, making it the longest-lived rift-zone eruption of the last two centuries.

The theory of plate tectonics has done for geology what Charles Darwin's theory of evolution did for biology. It provides geology with a comprehensive theory that explains "how the Earth works."

When the plates collide either the earth with push up or sink down therefore creating a volcano or sinkhole/earthquake.

Magma and lava are only slightly different. In the way that Magma is stored in the magma chamber inside the bottom of the volcano. While lava is the flow of the magma when it is released from the volcano.

Volcanoes are classified as extinct, dormant, or active. An extinct volcano is a volcano that is not now erupting and is not likely to erupt in the future. Mount Kohala, has not erupted for 60,000 years and will probably not erupt again. November 1993.
A dormant volcano is a volcano that is not now erupting but has erupted in historic time, since written records were kept (the last 200 years in Hawaii), and is likely to do so in the future. Mount Mauna Kea, has not erupted in historic time but is expected to erupt again in the future. There is no precise distinction between an active and dormant volcano. Because some volcanoes remain inactive for thousands of years between eruptions, it can be difficult to distinguish between an active and a dormant volcano.
An active volcano is a volcano that is erupting or is expected to do so in the near future. Kilauea volcano has erupted from its summit and flank 63 times since 1790. And is continuously been erupting since January 3rd 1983.

As you can see the ash from the eruption covers the ground like snow. Making it difficult for animals to eat grass. The lava that spews out of the volcano also creates a tuff living by burning tree homes of animals as well as killing animals. Once the lava has cooled and becomes hard it is very difficult for plants to regrow over time. So animals are having to relocate.