Tectonic Plates<span>, Earthquakes, and </span>Volcanoes<span>. According to the theory of </span>plate tectonics, Earth is an active planet. Its surface is composed of many individualplates<span> that move and interact, constantly changing and reshaping Earth's outer layer.</span>Volcanoes<span> and earthquakes both result from the </span>movement<span> of </span>tectonic plates<span>.</span>
Overcrowding and slums developed in many impoverished countries in the 20th century, mostly due to large migrations to cities from people looking for work.
Answer:
tree, fish, animals,plants
Explanation:
