Answer:
The answer would be .33
Explanation:
d
True or False
The given statement is False.
Radiocarbon dating cannot be used determine the age of the earth because the earth is million years old.
Radiocarbon dating can be used only for the substance that is 100-40,000 years old.
As, the earth is older than 40,000 years of age radiocarbon dating cannot be used for substances that is this much old.
Answer:
f
Explanation:
Answer:
A
Explanation:
Soil becomes less fertile the deeper it goes because the percentage of organic matter, such as humus and living organisms, decreases with depth. This reduction results in a lower nutrient content in the soil, lessening its fertility.
The soil gets less fertile the deeper it goes due to the increased distance from organic matter. The organic material of soil, called humus, is primarily found in the upper levels of the soil. It improves the soil structure and provides water and minerals to plants. As we go deeper into the soil, the quantity of this organic matter decreases which results in the soil being less fertile. The inorganic matter which primarily forms the deeper soil layers contributes less to fertility as it mainly consists of rock and lesser nutrients.
Besides, soil has different layers called horizons, each with distinct physical and chemical properties. These horizons include the A horizon which is a mixture of organic and inorganic products of weathering, and B horizon where there is an accumulation of mostly fine materials that have moved downward. The fertility of soil decreases as we move from the A horizon to the B horizon and further down.
Biological factors also play a significant role in the fertility of soil. The presence of living organisms greatly affects soil formation and structure. However, the number and impact of these organisms decrease with soil depth, also decreasing fertility.
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Answer:
It would swell and then burst.
Explanation:
B)determining medical problems
C)fueling nuclear reactions
D)treating brain tumors
Radioactive tracers are useful in determining medical problems.
Answer: B. Determining medical problems.
Explanation:
Radioactive tracers are comprised of carrier particles that are reinforced firmly to a radioactive atom. These bearer particles shift incredibly relying upon the motivation behind the scan.
A few tracers utilize atoms that associate with a particular protein or sugar in the body and can even utilize the patient's very own cells.
Examples of radioactive tracer are - tritium, carbon-11, carbon-14 and oxygen-15 and so forth. Radioactive tracers are either injected in the body intravenously or orally.