How has the geography of afghanistan made it difficult for invading armies to conquer?
select one:
a. it is primarily bordered by water, which makes surprise attacks more difficult.
b. the terrain is mostly desert and mountains.
c. mountains isolate the area, which has unified all afghans under one tribal affiliation.
d. it is the second-largest country, after russia.

In what way does renewable energy differ form nonrenewable energy?

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.

In a class of 20 students, what democratic form of governance makes the most sense