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Makovka662 [10]
2 years ago
5

Whose ability to use fossils in stratigraphy was identified as a major breakthrough in

Biology
1 answer:
Alex777 [14]2 years ago
4 0
William Smith and Georges Cuvier
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---------------- is the finest material can be blasted more than 20 kilometers into the atmosphere and carried much farther down
Ghella [55]

Pyroclastic materials are classified according to their size, measured in milli meters: dust (less than 0.6 mm [0.02 inch]), ash (fragments between 0.6 and 2 mm [0.02 to 0.08 inch]), cinders (fragments between 2 and 64 mm [0.08 and 2.5 inches], also known as lapilli), blocks (angular fragments greater than 64 mm), and bombs (rounded fragments greater than 64 mm).

The fluid nature of a pyroclastic flow is maintained by the turbulence of its internal gases. Both the incandescent pyroclastic particles and the rolling clouds of dust that rise above them actively liberate more gas. The expansion of these gases accounts for the nearly frictionless character of the flow as well as its great mobility and destructive power.

Pyroclastic flow, in a volcanic eruption, a fluidized mixture of hot rock fragments, hot gases, and entrapped air that moves at high speed in thick, gray-to-black, turbulent clouds that hug the ground. The temperature of the volcanic gases can reach about 600 to 700 °C (1,100 to 1,300 °F). The velocity of a flow often exceeds 100 km (60 miles) per hour and may attain speeds as great as 160 km (100 miles) per hour.

To learn more about Pyroclastic materials here

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7 0
2 years ago
1. What force, created when two surfaces rub together,
Mnenie [13.5K]

Answer:b friction

Explanation:

3 0
2 years ago
A school bus transporting students to school is an example of
melamori03 [73]

Answer:

2.kinetic energy because it has the ability to take the students to school.

Explanation:

Energy of a given system due to the virtue of the motion of the given system is known as kinetic energy of the system

now we know that

so kinetic energy depends upon mass of the system and the velocity of the system.

So here since bus is in motion and moving towards the school so the bus along with all the children must have kinetic energy in it

So here correct answer would be

2.kinetic energy because it has the ability to take the students to school.

6 0
3 years ago
True or False: If the prefix "iso" means the same, there is no change in the cell (egg).
iogann1982 [59]
True if you are talking about an isotonic solution
7 0
3 years ago
Read 2 more answers
Which organisms will be affected
Blizzard [7]

Answer:

,.........................................

6 0
3 years ago
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