Answer: A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction. If we look at a system in homeostasis, a positive feedback loop moves a system further away from the target of equilibrium.
Answer:
Laccolith
Explanation:
A laccolith is an intrusion with the shape of a mushroom that grows under the earth's surface. This happens when liquid magma exceeds its way between 2 layers of rock, causing the overlying sediments to puff out as the feature increases. Eventually, this causes the origin of small hills and mountains surrounding the top of the mountain.
The answer is B. In a destructive plate boundary, the descending plate, usually the oceanic plate begins to melt as it descends below into the mantle. This forms magma that rises and erupts onto the overlying continental plate through fissures. This volcanic activity is responsible for geographical features such as the volcanic island arc, which lies parallel to the subduction zone.
Bosque templado caducifolio
AIDS in Africa: causes for the high spread of the HIV virus
The reasons for the high level of AIDS spread in sub-Saharan Africa are manifold. The most common causes include: Poverty: About half of the world's people living in extreme poverty live in sub-Saharan Africa.
