<span>A checkboard pattern created by agricultural use of land</span>
I think the answer would be C) a place where water heated by magma rises from the ocean floor because it is an opening on the Ocean floor that releases heated mineral - rich water.
The seismic focus is the point in the earth's crust where an earthquake originates from.
Answer:
prohibits the introduction of invasive species
controls the kind of waste and pollutants allowed
assesses human influence on the environment
designates protected zones on the continent
Explanation:
These four key terms are some of what the Madrid Protocol includes.
Prohibiting the introduction of invasive species keeps the ecosystem from being dominated and/or destroyed by a single species that the ecosystem is not built to handle.
Controlling the kind of waste and pollutants allowed on the continent ensures that the environment remains stable without the influence of outside chemicals, such as oil or carbon emissions that could harm the ecosystems.
Assessing human influence on the environment keeps track who does what and how they do it, essentially preventing extreme human action from being taken so as to preserve Antarctica's natural order.
Designating protected zones on the continent that can only be accessed with special permits ensures that only people who require access for research or whatnot, or more simply, qualified personnel, are able to enter these zones, so as to keep contact down to a minimum and further preserve Antarctica's natural environment.
I belive it it O because <span>An O horizon has at least 20% </span>organic matter<span> by mass. Two main scenarios result in the formation of an O horizon: saturated, </span>anaerobic<span> conditions (wetlands) or high production of leaf litter in forested areas. Anaerobic conditions slow the </span>decomposition<span> process and allow organic material to accumulate. An O horizon can have various stages of decomposed organic matter: highly decomposed, sapric; moderately decomposed, hemic; and minimally decomposed, fibric. In a fibric O layer, plant matter is recognizable (e.g., it is possible to identify a leaf). Sapric material is broken down into much finer matter and is unrecognizable as a plant part. Hemic is in between sapric and fibric, with some barely recognizable plant material present. It is possible to have multiple O horizons stacked upon one another exhibiting different decomposition stages. Because of their organic content, these horizons are typically black or dark brown in color. The dominant processes of the O horizon are </span>additions<span> of organic matter, and </span><span>transformations </span><span>from fibric to sapric
</span>
