Answer:
They found evidence of an impact crater in Mexico
Explanation:
The K-Pg boundary is the boundary that separates two periods, but also two eras. The two periods that are separated by this boundary are the Cretaceous and the Tertiary, while the two eras are the Mesozoic and the Cenozoic. The boundary is marked by a mass extinction, and the scientists started to hypothesize as to why it happened. There were numerous different theories, but a clue in Mexico, or rather right next to the Yucatan Peninsula, shed new light on it. The scientists found an impact crater, formed either by a large asteroid or a comet. Such an impact would have easily caused sudden and drastic changes on the Earth, killing of the majority of the species. This impact released such a big amount of energy that it killed everything in the surrounding area in seconds. On top of that, it caused an extremely hot wave of air across the whole planet, killing many more organisms. It managed to trigger most of the volcanoes to erupt, as well as the earthquakes, causing also very large tsunamis. The sunlight got blocked for quite some time from all the aerosols in the atmosphere as well. This resulted in a mass extinction of the dominant species, like the dinosaurs, but it opened up the terrain for the evolution of the others, like the mammals.
I know one is France for sure I think the other is Russia
Answer: A. Large earthquakes offshore of Portugal.
Explanation:
Large earthquakes in coastal areas can cause tsunamis, an example of which being the boxer day tsunami in 2004.
Answer:
If Earth's axis was not tilted then the climate zones would change, there would be no seasons, and the day and night will last the same all year.
Explanation:
Earth's axis is tilted, and with it circling around the Sun, there a great effects on the planet's surface, from climate, duration of day and night throughout the year, change of seasons, amount of sunlight, etc. But if this was to change and Earth's axis is not tilted, then there will changes in pretty much everything on Earth's surface.
The climate zones will be very clearly separated by latitude, and every climate zone will be more or less monotonous throughout the year, with just minimal changes every now and then. This will happen because the amount of sunlight and the angle under which the sunlight falls will the same at a given place throughout all of the year. The day and night will also be the same, unlike the changes they experience with the tilted axis. To put it simply, the equatorial area will remain pretty much the same, but if we take the temperate zones then they will experience climate like it is always spring or autumn, while the higher latitudes will constantly be frozen and experience winter.
Answer:
d. lava flows volcanic mudslides called lahars
Explanation:
Mudflows of volcanic eruptions are the most dangerous, and are called lahars. A lahar is a type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris, and water.
