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Citrus2011 [14]
3 years ago
6

If a mineral crystal starts out with 160 parent isotopes

Geography
1 answer:
nydimaria [60]3 years ago
8 0

Rocks and Minerals ... Each unstable isotope has its own decay rate known as its half life. ... For example starting with 100% of a parent isotope after one half-life only 50% of the parent isotope would remain, after a second half-life half

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Why rural settlement have declined
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Rural settlement means people living in rural areas, that is, not in the cities (which are urban areas).

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4 years ago
Identify a counterexample: If the sum of two integers is even, then both the integers are even
exis [7]

Answer:

3+9 = 12

Explanation:

A <em>"counterexample" </em>is an example that shows the falseness of a statement.

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3 years ago
Explain how volcanoes are formed.
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Answer:

A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.

Explanation:

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3 years ago
The lithosphere is different than the hydrosphere in that the lithosphere has no living things on it and the hydrosphere is comp
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Answer:

the lithosphere is the solid, rocky crust covering the planet and the hydrosphere is composed of all the water on the planet

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3 years ago
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