In 2018 China had the world's largest population and India had the second largest population.

¿ cual es el pais mas grande del mundo ?

Dimas [21]

Russia

con 6.6 million de personas

6 0

3 years ago

Major events in trassic period

Yuri [45]

Answer:

Both the start and the end of the Triassic period is marked by some really interesting and important events. Major events were:

1. The major extinction event

2. Splitting of Pangaea

3. Expansion of animal life

4. Massive change and rejuvenation (appearance of Mammals)

Explanation:

The Triassic is a geologic period and system which took place 251 to 199 million years ago. The Triassic is the first and shortest period of the Mesozoic Era.

1. The major extinction event

Triassic period (and the Mesozoic era) didn’t exactly have such a glorious start. Violent volcanic eruptions, climate change, a fatal run-in with a comet/asteroid had set off the extinction of more than 90% of Earth’s species.

2. Splitting of Pangaea

By the start of the Triassic, Pangaea was already formed as a supercontinent shaped like a giant C. Almost as soon as the supercontinent formed, it started cracking. By the end of the Triassic period, 199 million years ago, tectonic forces had started splitting the supercontinent in two (Laurasia in the north and Gondwana in the south). The ocean called Tethys filled the “C” and that’s how the splitting of Pangaea started. Interesting thing to know is that earlier failed attempts of splitting formed rift valleys in North America and Africa that are today very rich in the best preserved fossils of Triassic life.

3. Expansion of animal life

There is a long list of animals that existed or first appeared in the Triassic period.

The oceans were filled with the coiled-shelled ammonites, mollusks, and sea urchins that survived the Permian extinction and were quickly diversifying. The first corals appeared! Although, some other reef-building organisms were already present.

Other amazing creatures were: dolphin-shaped ichthyosaurus, plesiosaurus, fish, ancient squid, phytoplankton (two of the major groups still in the ocean today first appeared), frogs, salamanders, crocodiles, turtles, snakes, pterosaurs (a group of flying reptiles), moss, ferns, spiders, scorpions, centipedes (thrived), grasshoppers (first appeared), etc. As I said, the list is very long.

4. Massive change and rejuvenation (appearance of Mammals)

Last but definitely not least characteristic of the Triassic is that it was the time of tremendous change and rejuvenation. Life that survived the so-called Great Dying repopulated the planet and gave rise to new creatures, such as rodent-size mammals and the first dinosaurs.

Perhaps the biggest changes came with the evolution of dinosaurs and the first mammals in the late Triassic, starting around 230 million years ago (Eozostrodon, Coelophysis, Plateosaurus)

The Triassic finished in the same way it began. Something, perhaps a volcanic belch or an asteroid collision caused another mass extinction. Dinosaurs, however, survived and went on to dominate the Jurassic. And the rest is history. :)

3 0

3 years ago

According to this map, how did the United States answer the Soviet threat of missiles in Cuba?

Liula [17]

The correct answer is - by blockading the island with aircraft carriers.

After Castro came to power in Cuba, he immediately made an alliance with the Soviet Union. That was a devastating news for the United States, as that meant that their arch rival will be able to make its basis right next door to their territory.

The United States responded by blocking the island as much as possible, by using numerous aircraft carriers that circled around the island, they were trying to threaten them, and also to be able to block or to respond quickly to any attack from Cuban territory.

6 0

3 years ago

Read 2 more answers

The east coast of the United States today is oriented nearly straight north–south. Do you think the orientation was the same 370

KatRina [158]

Answer:

No.

Explanation:

No, I think the orientation was not the same 370 million years ago because 370 millions years ago there is a single super continent is present so with the passage of time, the super continent broken down into seven continents due to the activity of tectonic plates present inside the earth crust. So we can say that the orientation of east coast of United states were not the same 370 million years ago.

7 0

3 years ago

What is Vladimir Koppen best known for?

Hunter-Best [27]

Wladimir Köppen was a German meteorologist, climatologist and botanist. He elaborated the Köppen climate classification system, which is still commonly used today to group climates into similar types (albeit with modifications). See also Climate.

4 0

2 years ago