Mass movement<span> is the </span>movement<span> of surface material, such as soil, rocks and debris, caused by gravity and other underlying conditions, such as water, wind, ice and human activity.</span>
4. "Tropical" is the one among the following choices given in the question that is the<span> predominant climate of South America. The correct option among all the options given is the fourth option.
5. "Albatross" is the one bird species among the following that </span><span>is found almost exclusively in the Southern Hemisphere. The correct option among all the options given is the third option.</span>
Answer:
True
Explanation:
The Cordilleras have one major factor that distinguishes them from the other mountain ranges, the three phases of its orogeny. Unlike most of the mountains in the world that have been created by a single orogenic process, that is not the case with the Cordilleras. There have been three consecutive orogenies, the Nevadan, Sevier, and Laramide orogenic process that created the Cordilleras, thus making them a unique mountain range.
The answer is: waterfalls can usually be found wherever there is lots of erosion or where there is steepness in the river's channel.
The fact that volcanic rock has often been found early in the rock record but less frequently in later rock layers suggest to scientists the following conclusion about early earth: <span>volcanic activity was more common in the past than it is today.
</span>Besides volcanic activity in general, also huge volcanic eruptions<span> were much </span>more common than today<span>.</span>
