Sandstone is a(n) ____ sedimentary rock.

Answers

Answer 1
Answer: Sandstoneis a clastic sedimentary rock. A clastic sedimentary rock is composed of silicateminerals and rock fragments. They are transported by moving fluids such assedimentation due to gravity and are deposited in the area where it stays. Theyare composed mostly of feldspar, quartz, rock (lithic) fragments, clay mineralsand mica.

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Which model placed Earth at the center of the universe?a. reversed
b. geocentric
c. retrograde
d. heliocentric

Answers

B, geocentric is where every planet in our small solar system is flying around the earth rather than us around the Sun (star).  

In the post-industrial era, an edge city is a/an A. large suburban development mainly occupied by commuters.
B. complex of warehouses, shopping malls, and offices located along traffic routes.
C. urbanized development that is an extension of a megalopolis.
D. merger of several residential suburbs into one entity.

Answers

The correct answer for this question is this one: "b. urbanized development that is an extension of a megalopolis." In the post-industrial era, an edge city is an urbanized development that is an extension of a megalopolis. It is also considered as the "center" of trade for other producers.

Why do many South Americans move from rural to urban areas?

Answers

There are several reasons why many South Americans move from rural to urban areas, but in general many do this because there are more opportunities and higher pay in urban areas. 

Answer: jobs

Explanation: Hope this helps :)

You can usually tell the difference between a caldera and crater by studying _____.-a feature's size and formation
-if a feature is filled with water or not
-a feature's size and shape
-if a feature is a cinder cone volcano

Answers

You can usually tell the difference between a caldera and crater by studying a feature's size and formation. In terms of size, a caldera is often relatively larger than ordinary craters. A caldera is so big that it causes explosive eruptions. In terms of formation, a caldera is a large depression caused when a magma chamber is emptied. A crater is a bowl-like formation at the top of volcanoes where lava comes out.

Aid agencies estimated that approximately four million residents of __________ required food aid in 2009.

Answers

In this question, there are no options given. So we have to answer based on our knowledge. Aid agencies estimated that approximately four million residents of Ethiopia required food aid in 2009. Ethiopia is a country that has long suffered from drought and famine. The people of Ethiopia has long survived on the basis of the food aids they have received. 

Answer:

Ethiopia (A)

Explanation:

That other guys answer was spot on for not having any answers to help him, so all credit and respect should go to him.

Tectonic plate movement is created by _____ in the underlying mantle.rigidity
low temperatures
convection
condensation

Answers

Tectonic plate movement is created by convection in the underlying mantle. The correct option among all the options given in the question is the third or the second last option. The convection current is caused due to the temperature difference in the mantle. The material of the mantle near the core is very hot while the mantle material near the Lithosphere is cooler in comparison to the core.