Answer:
c. are too old (predate sedimentary deposition)
Explanation:
Radiometric dates calculated from minerals in sedimentary rocks produce ages that are too old and often predates the sedimentary deposition.
Radiometric dating involves the uses of radioactive elements in rocks to measure the absolute age of rock.
It involves comparing the daughter to parent ratio because the decay started when the minerals formed in a rock in a period of crystallization or metamorphic event.
- Sedimentary rocks are often made up of re-worked minerals.
- They are derived from pre-existing igneous and metamorphic rocks.
- When radioactive minerals from these sources finds their way into sediments, they give the age of their parent rock and not that of the sedimentary rock because their activity is not being reset.
Answer:
B option is correct of course!!
North America was most likely over the South Pole of Pangaea.
Answer: Answer here
Explanation:
Economic sanctions are commercial and financial penalties applied by one or more countries against a targeted self-governing state, group, or individual. Economic sanctions are not necessarily imposed because of economic circumstances—they may also be imposed for a variety of political, military, and social issues.
The correct answer is - The government controls factories and other forms of production.
The Socialist governments with their command economies tend to control all factories in the country, as well as all the production in the country. Everything is planned by the government officials, and it is planned in a way of self-sustainability, and very often that has been causing huge problems.
