If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a _____.-lava dome
-geyser
-volcanic neck
-flood basalt plateau

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Answer 1

Answer: If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a volcanic neck. Also known as a lava neck or volcanic plug, a volcanic neck is formed when magma solidifies within a vent of an active volcano. This can harness great amounts of pressures which could lead to an explosive eruption.

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How have Germany's borders changed from 1919 - 1990 and why?

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in 1919, Germany lost a number of small portions of land: to Poland, France and Denmark

-during the WW2, Germany annexed a lot of land, including Chechia and parts of Poland

-after the war, a big part of Eastern Germany was given to Poland, and Germany was split into Western and Eastern Germany

-in 1990 it was reunited and the borders have been stable ever since

Mr. Hitch taught us about sedimentary, metamorphic, and igneous rocks. He described how they were formed, what they contain, and showed us samples of each. He is a good _____. astronomer meteorologist geologist oceanographer

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The answer would be : Geologist

Geologist is an occupation that study everything about the earth and how it formed, this will include the type of lands /rocks, what they contain, what is their effect to the earth, etc

hope this helps

Gravel covered plain is called?

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A gravel covered plain is called a Reg. A reg is a desert basin where the sand has been blown away leaving a gravel covered plain.

After two half-lives, there is no longer any of the original radioactive material remaining.a) true
b) false

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After two half-lives, there is no longer any of the original radioactive material remaining. Thus, the given statement is true.

What is the half-life of a radioactive isotope?

A radioactive isotope's half-life is the amount of time it takes for the number of nuclei in a sample to decrease by half. The Phanerozoic eon refers to the whole period of geologic time that preceded the start of the Paleozoic era. The isotope's mass number is unaffected by the emission of a beta particle. There is no longer any of the original radioactive material after two half-lives.

A half-life, or the amount of time it takes for half of a substance to decay radioactively, is what distinguishes natural radioactive processes. It is simple to determine how much material remains after a specific number of half-lives. For instance, the six-hour half-life of the aforementioned technetium-99m indicates that starting at 100 percent, after six hours, we can no longer detect it.

Learn more about radioactive isotopes, here:

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Answer:

true

After two half-lives, there is no longer any of the original radioactive material remaining.

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Which of the following is correct? A. North Africa relies on tourism

B. North Africa has struggled with civil war.

C.North Africa is facing desertification.

D.All of the above

Answers

Answer:

Explanation:

Edge 2021

the rock in the above photo was formed by lava cooling very quicklywhen spewed out of the volcano. what type of rock is it? a.sedimentary b.metamorphic c.igneous