The correct answer is (c.) troposphere
The troposphere is the lowest portion of the atmosphere but also it is where most gas particles are located. It holds 75 percent of the atmosphere's mass. It is typically a hundred meters deep to 2 km. Above the troposphere is the tropopause, bordering between troposphere and the stratosphere.
Answer:
known as "obamacare" the Patient Protection and Affordable Care Act is a law from 2010 that creates a number of rights and protections to create a health care system more fair. It also creates subsidies to help making it more affordable for those who can't pay.
A important fact for the mental health patients that need help from the government to have their insurance is that, with the ACA, health insurance companies are not allowed to deny coverage for those who already had a mental condition diagnosis. It also obligates the insurance to have preventive programs without paying any other extra fees.
In divergent boundaries, plates move away from one another, often causing volcanic activity. The cooled magma is able to form islands such as the ones on the Aleutian archipelago.
*I don't think any of these are actual types of mountains. <em>Arc contient </em>and <em>Andean</em> aren't even real things.
As for your second question:
There are two main types of rocks in the Earth's crust.
Granite is less dense and rises higher, usually above land in continental crust.
Basalt is denser and so it will sink lower and form oceanic crust.
However, there is a layer of sediment on top of that crust. (sand, gravel, etc.)
It is called as "Plate Tectonics".
