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Ber [7]
3 years ago
12

Topsoil is _____.

Biology
2 answers:
inessss [21]3 years ago
7 0

Answer: The correct answer for the blank is- b. rich in minerals and organic material.

Topsoil is the outermost layer of the soil, which is generally 5 to 10 inches in thickness. This layer is enriched with minerals, organic matter, and microorganisms. It is the site of maximum biological activity that occur on the earth. Roots of plants are also concentrated in this layer so that they can absorb all the nutrients essential for the growth of plant.

Thus, option B)  rich in minerals and organic material is the right answer.



mart [117]3 years ago
6 0
B. Rich in minerals and organic material.

Due to the decomposers found in there.
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Explanation:

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3 years ago
Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree
Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

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a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

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t=\frac{2.303}{k}\log\frac{100}{36}

t=\frac{2.303}{0.00012}\log\frac{100}{36}

t = 8515 years

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3 years ago
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Answer:

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Tony is a person, place, or thing

8 0
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Read 2 more answers
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