<span>Here's what happens in the </span>Brexit process<span> once Article 50 is triggered. ... What </span>will<span> the Article 50 achieve once </span>completed<span>? Article 50 simply provides a path ... When are </span>official<span> talks between the UK and EU expected to begin?</span>
Many animals that live in the river depend on the recycling of the nutrients.
Variations in air pressure from place to place are the principal cause of wind.
Fossils help scientists date rocks: True
Sometimes younger rock layers are found beneath older rock layers: True, because it happens with landslides and other causes.
No fossils from the Precambrian era have been found because there were no organisms at the time: False because there were organisims like algae and bacteria, and there are a very small amout of fossils from that era.
The map of Earth has changed over millions of years, but is now set: False
Regional volcanism is associated with mountain building.
Answer: Option D
<u>Explanation:</u>
Mountain building which is also known as the orogeny is the geological process such as movement of tectonic plates and volcanic activities because of which the mountains are formed by the pressure on the earth's crust when the plates collide.
So the occurring of volcanoes in a particular region along the plate boundaries where there is some movement in the tectonic plates might result in the formation of a mountain.
