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.
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What is the 1000 year period after the fall of Rome called?
The 1000 year period after the fall of Rome is called Middle Ages. This is a period where the Odovacor, German prince had sway the power of the Roman army of Italy.
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Unclear question. I infer this be your question;
<h3><em>
"List five European regions with strong separatist movements. write for each of them the name of the country from which the population of these regions wants to separate".</em></h3>
<u>Explanation</u>:
<u>The Five Regions</u>:
- Scotland
- Basque
- Samogitia
- Chechnya
- Kashubia
<u>Population to separate from:</u>
- United Kingdom
- France
- Lithuania
- Russia
- Poland
The correct answer is B. An ecosystem resource; an ecosystem service
Explanation:
In ecosystems, a resource refers to any substance, material, object, etc. that is necessary for the biological processes of organisms, for example, breathing, growth, reproduction or nutrition. In this way, water is an example of an ecosystem resource because this natural resource is necessary for the life of almost all organisms. On the other hand, an ecosystem service refers to natural processes and systems that benefit humans, in the case of water cycle this is an example of an ecosystem service because due to this, humans get potable water to drink, water for growing plants and animals, among others.
When plates move away from each other it can cause rift valleys to form.
