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3 years ago

Why did scientists FIRST hypothesize that a meteorite impact caused the extinction at the K-Pg Boundary?

Geography

1 answer:

Stolb23 [73]3 years ago

8 0

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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The ocean regulates temperatures, keeping them mild year-round, in __________ climate regions.

Angelina_Jolie [31]

Answer:

The correct answer i believe is c

Explanation:

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3 years ago

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The Civil War has also been called the "War Between the States" and the "War for Southern Independence." Which of the three titl

lisabon 2012 [21]

Answer:

The Civil War

Explanation:

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Large megathrust earthquakes in the mountainous regions flanking the Mediterranean sea are generally due to ________.

Serga [27]

Explanation:

the collision of the African Plate with Eurasia

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3 years ago

Which of the generalized channel paths seen in the stream capture folder most likely represents the previous outlet channel of t

Alenkasestr [34]

The generalized channel path A seen in the stream capture folder most likely represents the previous outlet channel of the Murray river.

The Murray River is a river in southeastern Australia. At 2,508 km long, it is Australia's longest river. Its tributaries include five of the six longest rivers in Australia.

Most of the rivers in the basin begin in the Great Dividing Range. This is a range of mountains on the east coast of Australia that stretches from northern Queensland through New South Wales to Victoria. The basin ends in South Australia where the Murray River meets the Southern Ocean.

Learn more about the Murray river here: brainly.com/question/23158860

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1 year ago

In our Solar System the mass is primarily at the center, so the orbital speed of the planets decreases with distance. In a galax

r-ruslan [8.4K]

Answer:

Check Explanation.

Explanation:

In order to be able to answer this question effectively and efficiently we have to consider the Newton's law of Universal gravitation which is given by the mathematical representation below;

Gravitational force, F = G (m1 × m2) / r^2.

Where G = Gravitational constant, m1 and m2 and the masses of body one and two respectively and r = distance.

So, we can deduce that the mass(in form of kinetic energy) increase at large distance and this makes the speed to reduce.

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3 years ago