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1, which statement describes metamorphic rock formation?
a. layers build up over time
b. magma cools and hardens.
c. once-living organisms become buried.
d. pressure causes rock to change.

2, which evidence would confirm that a given rock layer is newer than the layers around it?
a. it has been crumpled and folded, while the other layers lie flat.
b. other layers have been deposited above it.
c. it cuts through all the other layers.
d. it is horizontally-oriented.

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

Reading graphs: unemployment us unemployment rate (1961-2011) identify the trends in the graph and then use the drop- down menu to complete each statement from 1961 to 1965 unemployment was in the mid-2000s through 2011. unemployment was percentage unemployed 1961 1971 1981 1991 2001 2011 year

Why might a single rock layer exhibit different types of sedimentary rocks within it? view available hint(s) why might a single rock layer exhibit different types of sedimentary rocks within it? such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed in a sequence over time. such a rock layer, termed a facies, when traced laterally represents a single depositional environment that formed over time. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed in a sequence over time.