Answer:
Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy
Explanation:
Answer:
Igneous rocks are formed from cooled magma but metamorphic rocks are formed by temperature and pressure changes inside the Earth
Explanation:
Igneous rock , formed by the cooling of magma (molten rock) inside the Earth or on the surface. ... Metamorphic rocks, formed by temperature and pressure changes inside the Earth. All three types of rock make up the Earth's lithosphere, the outermost layer.
<span>The correct answer is plate tectonics. The outermost shell of Earth, called the lithosphere, is partitioned into different tectonic plates (7 or 8 major ones). When a plate breaks along what are called faults, there is a release of energy, which causes seismic waves (the ground shaking). This shaking then causes several plates to rub against each other, and when they break, the earthquake results.</span>
