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3 years ago

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The processes responsible for virtually all surface geology are _________.

1 answer:

kakasveta [241]3 years ago

5 0

These processes are volcanic eruptions, impact cratering, tectonics, and erosion. Impact cratering may occur due to meteoroids. The eruptions and disruptions caused during these processes lead to the release of many minerals and other components which eventually affect the surface geology of a planet.

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Strontium-90 has a half life of 29 years, how much strontium-90 is left from the Chicago pile reactor that was active around 87

agasfer [191]

Answer:

The answer is below

Explanation:

The half life of a substance is the time required by that substance to reduce to half of its initial value. The half life is calculated using the formula:

$N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\where\ N(t)=quantity\ of\ substance \ remaining, N_o=initial\ quantity\\of\ substance, t=time\ and \ t_\frac{1}{2}=half\ life\ of\ substance$

Given that t = 87 years, half life = 29 years, therefore the quantity of strontium-90 left is:

$N(t)=N_o(\frac{1}{2} )^\frac{87}{29} \\\\N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\N(t)=N_o(\frac{1}{2} )^3\\\\N(t)=\frac{1}{8} N_o$

That is one-eight of Strontium 90 would be left after 87 years

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3 years ago

In living things, dehydration synthesis reactions result in the formation of A) polymers. B) monomers. C) carbon atoms. D) monos

Naily [24]

I believe the answer is A. Not 100% sure though

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3 years ago

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Trace fossils are not actual pieces, molds or impressions of organisms.<br> O True<br> O False

julsineya [31]

Answer:

your answer is no

Explanation:

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3 years ago

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Match the words please

KIM [24]

Answer:

Answer:

Explanation:

1. Monoculture

2. Erosion

3. Desertification

4. Bio-logical Magnification

5. Bio- diversity

6. Ecological hot spot

7. ecological footprint

8. Ozone Layer

9. Aquaculture

10. Global Warming

Explanation:

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2 years ago

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What can we conclude about p. caudatum from this experiment?

jekas [21]

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3 years ago