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yawa3891 [41]
3 years ago
6

If a radioactive substance's half-life is 20 years, how much of a 40-gram sample will be left after 60 years? A. 5 grams B. 10 g

rams C. 20 grams D. 30 grams
Biology
2 answers:
satela [25.4K]3 years ago
8 0

Answer:

c. 20

Explanation:

tatiyna3 years ago
6 0
60 years is three half life for the substance, so 40*1/2^3=5
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goldenfox [79]

The meaning of the words are:

  • Title page- The title page appears at the beginning of a book or document and indicates the title, author's name and editor's name, and the publication information.
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  • Definition- The meaning of a word.

<h3>What is a Title Page?</h3>

This refers to the page at the beginning of a book that shows the important details of the book such as the content, author's name, etc.

Hence, we can see that there are some words that are necessary for vocabulary building and some of them are listed and their meanings are given above.

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A fossil leaf that is made only of carbon preserved between two rock layers is called
Naily [24]
<span>A fossil leaf that is made only of carbon preserved between two rock layers is called carbon film fossil.
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The larger value obtained when more glucose carriers were present corresponds to an increase in the rate of glucose transport. E
Gekata [30.6K]

Answer:

Prediction is correct.

Explanation:

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An example is by facilitated diffusion.

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The results will show our prediction was correct.

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