Nagorno-Karabakh is an ethnic enclave of ________ in ________

Dust devils and tornadoes form under similar conditions; tornadoes are just much stronger

Indicate whether the statement is true or false

As magma approaches the surface, water contributes to the explosive potential of the eruption because ________

A) water dissociates to hydrogen and oxygen at high temperatures but reacts violently at decreasing pressures to produce explosive eruptions B) water has a lower density in its solid phase than its liquid phase which makes it explode when pressure decreases C) water has a large heat capacity, which allow it to keep the magma hot enough to explode D) water dissolved in magma flashes to steam as pressure decreases, and the volume increase leads to an explosive potential

A wind shift from south or southwest to northwest is commonly associated with the passage of a ________ front

A) neither warm nor cold B) cold C) stationary D) warm

In human-dominated ecosystems, which of the following features is often lacking?

A) the presence of positive feedback systems B) an ecosystem's ability to grow sufficient food C) the presence of sufficient human infrastructure D) homeostatic regulation E) drought resistant regulation