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.
Any fossil fuel like tar, gas, etc
Valleys can be found in areas where there are alot of Mountains, Canyons can be found in places near rivers, plains are found in central North America, and Volcanoes can be found on islands.
Answer and Explanation:
In the face of a tropical cyclone, many precautionary measures can be taken in the future to prevent major and more destructive damage from happening and to allow people to be as safe as possible. Among these precautionary measures we can mention:
The evacuation of the inhabitants of a potentially flooded region, either by storm, or by rising tides.
Creation of safe and strong shelters, with availability of food and medicine.
Keep the shelter windowless, or keep the windows protected, preventing them from breaking and hurting people.
Disconnect electronic devices, but keep a communication source that informs you when the region is safe again.
