Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
Kilograms :))))))))))))))))
Answer:
Resources are unevenly distributed throughout the world.
Explanation:
It is saying where reasores are not what they are or how they are uses
Answer:
<em>Rain forests provide important ecological services, including storing hundreds of billions of tons of carbon, buffering against flood and drought, stabilizing soils, influencing rainfall patterns, and providing a home to wildlife and indigenous people. Rain forests are also the source of many useful products upon which local communities depend.
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<em>While rain forests are critically important to humanity, they are rapidly being destroyed by human activities. The biggest cause of deforestation is conversion of forest land for agriculture. In the past subsistence agriculture was the primary driver of rain forest conversion, but today industrial agriculture — especially mono-culture and livestock production — is the dominant driver of rain forest loss worldwide. Logging is the biggest cause of forest degradation and usually proceeds deforestation for agriculture.</em>
B. There is no key on the map
Explanation:
Shania would be unable to determine the oldest formation because there is no key on the map. The map does not contain the proper details to be used to infer age relationships among the formations.
- A map presents a three dimensional world on two dimensional paper or surface.
- To infer relative ages, a cross section from the two dimensional representation is the most desired.
- From the cross section, the third dimension can carefully be studied and ages inferred.
- There is little to no way we can infer relative age relationship on this surface.
- To do that, we would require a key. Most times, the key shows the stratigraphic column which puts rocks in their correct ages.
- Most keys are arranged with formations from the oldest at the bottom and the youngest on top.
- Since this map lacks a key, direction, scale and other map elements, it would not be possible to infer relative ages of the rock.
Learn more:
Radiometric dating brainly.com/question/7022607
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