Answer:
The presence of iridium in concentrations higher than 100 times the normal in the Cretaceous–Paleogene (K–Pg) boundary supports the Alvarez Impact Hypothesis.
Explanation:
Father and Son Alvarez argued that since iridium is present in extremely minute quantities on earth, its presence in very high concentrations in this layer which is thought to date back to 66 million years is evidence that an extraterrestrial impact took place which brought the iridium. The high destructive nature of the impact spread the iridium far and wide which deposited on the surface which is why it is present in this layer which dates back to that period.
How large are each of the map elements normally asked by mapmakers before they design a new map.
The Pyrenees are a mountain range in the western part of Europe. This mountain range is a natural boundary between the Iberian Peninsula and the rest of Western Europe.
This mountain range has formed as part of the Alpine orogenesis. The Alpine orogenesis has been triggered by the movement of Africa toward Europe, so the pressure created between the African and Eurasian tectonic plates has managed to lift up the land and create mountains, including the Pyrenees.
The Pyrenees are considered as young mountain range, and their formation is still not ended, but instead they are still growing in size and elevation.
These mountains make up the border between the nations of Spain, on the south from them, and France, on the north of them. There is one very small nations located on the mountains themselves, that being Andorra.
Answer:
check reason below
Explanation:
death rates decrease due to advanced technologies(better medical institution)
birth rates decrease to high levels of literacy and due to families planning.
