When pieces of the granite get broken off and carried to a new place by weathering and erosion, the pieces can get deposited in the bottom of a lake or sea. Over time the sediments get compacted and cemented together to become sedimentary rock. Sandstone, limestone, and conglomerate can form this way.
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Answer:
You did not write the concept, so i will try to answer in a general way.
Why sometimes we really need to model concepts?
Well, sometimes the things are really complicated, or we just do not have the knowledge or tools to fully understand them.
Here is where the models came to be handy, we can somewhat "simplify" the things, and explain them with models.
For example, the movement of a particle as the wind pushes it can be really complex, so this can only be explained with a model.
Now, once we have a model (supported by theory and experiments) we can start to investigating furthermore in the given subject.
So for example, we could model how a given therapy acts on a given disease, and with that model, we could extrapolate the effects of the therapy in a similar disease (for example, testing how radiotherapy acts on a given tumor in some organ, can give information on how the same therapy can act on other types of tumors)
Concluding, models simplify some concepts, which allow us to understand them and work better with them
The answer to the question is logic
There is an expected increased demand for both hydrologists and environmental scientists because of the increased demand for use of natural resources and the need to enforce all of the environmental laws and regulations. They also need to analyze human impact on the environment and ensure all of the proper disposal of human wastes. The hydrologists and scientists also advise policymakers in the government about numerous other things. They will also clean up polluted areas all over the world. The goal for these workers is to reduce industry waste. The men and women who do this job works in the field, offices, and also in laboratories. This is usually a full time job. The starting yearly salary for these specialists is an estimated $67,450 U.S dollars, as of May 2016. The expected job growth is 11% by by 2024. A person will need a Bachelors degree to pursue this job. So, the correct answer will be B.
