Answer:
The WHO has many achievements under its belt. Perhaps the most famous of these is the eradication of smallpox, which was declared to be complete on 9 December 1979 after a long campaign. This was no easy feat, as vaccination campaigns need coordinated action to reach as many people as possible.
explian how your at school could have a larger impact on your neighbourhood?
A porphyritic texture where large crystals are embedded in a matrix of small crystal may form when ________.
Answer:
crystals of different compositions cool at different rates
Explanation:
An igneous rock that cools rapidly is likely to have ________ crystals.
Answer:
An igneous rock that cools rapidly is likely to have SMALL crystals.
5) Select the best answer.
Why are maps important to geographers?
Maps provide information about culture.
Maps help geographers study spatial relationships.
Maps are a good source of income.
Maps are the only tools available to geographers.
What solutions would help decrease flood frequencies and flood sizes that are caused by urbanization
Answer: Fish farming, a type of aquaculture, produces fish through selective breeding to produce a cheap source of protein, reducing the fishing pressure on wild stock fish.
Explanation:
Approximately how many islands make up the country of japan?.
Answer:
Approximately 3,000.
Explanation:
Sorry if I'm writing
The movement of tectonic plates is inferred by many scientists to be driven by:.
Hi there!
This would be the convection in Earth's mantle.
Let me know if you need more help :)
Which of the following would be an example of decreasing the lithostatic pressure under a volcano?
Lava flows stacking on top of one another to make a taller volcano.
Volcanic gas interacting with the rocks to make them weaker.
Violent shaking of the volcano due to large earthquakes.
A landslide that removes the top of a volcano.
Answer:
Lithostatic pressure, the stress exerted on a body of rock by surrounding rock, is pressure in Earth's crust somewhat analogous to hydrostatic pressure in fluids. Lithostatic pressure increases with depth below Earth's surface.
Explanation: Abstract
We use numerical models to study the mechanical stability of magma reservoirs embedded in elastic host rock. We quantify the overpressure required to open tensile fractures (the failure overpressure), as a function of the depth and the size of the reservoir, the loading by the volcanic edifice, and the pore fluid pressure in the crust. We show that the pore fluid pressure is the most important parameter controlling the magnitude of the failure overpressure rather than the reservoir depth and the edifice load. Under lithostatic pore fluid pressure conditions, the failure overpressure is on the order of the rock tensile strength (a few tens of megapascals). Under zero pore fluid pressure conditions, the failure overpressure increases linearly with depth (a few hundreds of megapascals at 5 km depth). We use our models to forecast the failure displacement (the cumulative surface displacement just before an eruption) on volcanoes showing unrest: Sinabung and Agung (Indonesia) and Okmok and Westdahl (Aleutian). By comparison between our forecast and the observation, we provide valuable constraint on the pore fluid pressure conditions on the volcanic system. At Okmok, the occurrence of the 2008 eruption can be explained with a 1,000 m reservoir embedded in high pore fluid pressure, whereas the absence of eruption at Westdahl better suggests that the pore fluid pressure is much lower than lithostatic. Our finding suggests that the pore fluid pressure conditions around the reservoir may play an important role in the triggering of an eruption by encouraging or discouraging the failure of the reservoir.
1 Introduction
The past decades have provided a wealth of observations of ground surface deformation before, during, and after volcanic eruptions using Global Positioning System (GPS), tiltmeters, strainmeters, or satellite radar interferometry (InSAR). Observed preeruption inflation ranges from a few centimeters prior to the 2006 Augustine eruption, Alaska (Cervelli et al., 2006) to several meters at Sierra Negra volcano, Galapagos Islands (Geist et al., 2008). An important question for hazard assessment is whether detected inflation is a precursor for an eruption (Biggs et al., 2014; Chaussard et al., 2013; Dzurisin, 2003; Moran et al., 2011). There are many observations of preeruptive inflation at basaltic volcanoes, for example, at Krafla and Grimsvötn in Iceland (Bjornsson et al., 1979; Ewart et al., 1991; Lengliné et al., 2008; Reverso et al., 2014; Sturkell et al., 2006), Kilauea in Hawaii (Dvorak & Dzurisin, 1993), Fernandina in the Galapagos Islands (Bagnardi & Amelung, 2012), Axial Seamount in the Pacific ridge (Nooner & Chadwick, 2009), and Okmok in Alaska (Lu et al., 1998, 2010). For several andesitic and dacitic volcanoes arc-wide, InSAR surveys have documented preeruptive inflation (Chaussard & Amelung, 2012; Chaussard et al., 2013; Lu & Dzurisin, 2014; Pritchard & Simons, 2002; 2004). In contrast, other volcanic systems can show unrest in form of ground deformation, earthquakes swarms, large heat, and gas emissions for months to decades without eruption (Acocella et al., 2015; López et al., 2012; Lowenstern et al., 2006; Martí et al., 2013; Newhall & Dzurisin, 1988). This is the case of many silicic caldera volcanoes such as Long Valley (Hill, 1984; Newman et al., 2006), Santorini (Newman et al., 2012; Parks et al., 2012), Yellowstone (Chang et al., 2007; Wicks et al., 2006), Campi Flegrei (Amoruso et al., 2007; Beauducel et al., 2004; Di Vito et al., 1999; Gottsmann et al., 2006; Lundgren et al., 2001; Orsi et al., 1999; Samsonov et al., 2014; Trasatti et al., 2008; Troise et al., 2007; Vilardo et al., 2009), or Laguna del Maule (Feigl et al., 2014; Le Mével et al., 2015).
The inflation of the ground surface in volcanic areas results from stress changes in the crust due to the accumulation of magma or the exsolution of gas inside reservoirs or due to the propagation of magma through intrusions or conduits. Such surface displacements are often modeled at first order by analytical solutions such as point pressure sources (Mogi, 1958), finite spherical sources (McTigue, 1987), or dislocations (Okada, 1985) embedded in an elastic half-space. In a case by case approach, more realistic models based on numerical techniques have been also developed to better explain volcanic ground deformation. Such models can take into account the rheology of the crust, the heterogeneities of the rock properties and the topography of the volcano (Currenti et al., 2010; Del Negro et al., 2009; De Natale et al., 1997; Geyer & Gottsmann, 2010; Ronchin et al., 2015).
Reservoirs serve all of the following purposes in East Asia except __________.
A.
storing water
B.
irrigating crops
C.
producing energy
D.
protecting against floods
Answer:
Explanation:
Option D
Reservoirs serve all of the following purposes in East Asia except protecting against flood.
If the climate has always changed, why is it so important now?
This is a Global warming question, help
Answer:
The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt. Now, day by day new technologies are invented, causing more pollution than in the past. It is important now because we are developing in very fast steps and something should be done.
There were 943 tornadoes reported in the U.S. in 2013, and 897 tornadoes were reported in 2014. What percent decrease was there from 2013 to 2014
Answer:
4.88% decrease
Explanation:
943-897 = 46 46/943 = 4.88%
What is the northernmost country in the united kingdom?.
A scientist finds burned wood in a fire pit of an ancient home. He also finds an ax made of rock. How could the scientist estimate when the ax was made?
Answer:
Radiometric dating
Explanation:
The scientist can use radiometric dating to find out when the ax was made. Radiometric dating is a method of dating geological/ archeological items, by determining the relative age of particular radioactive elements present in the sample.
Labor is considered capital
Group of answer choices
True
False
Answer:
true
Explanation:
capital is anything made that is used to make something else.
One example of ________ is the differences between hemispheres in the areas underlying language function.
Answer:
lateralization
Explanation: the lateralization of brain work in the propensity for some neural capacities
I hope this is helpfull
(will give brainliest!) Taiwan is thought to be the primary root of all of the __________ peoples that range from Madagascar, the Polynesian Island, Easter Island, and Hawaii.
Question 11 options:
Chinese
Japanese
Mongolian
Austronesian
Answer: Austronesian people
k12? haha
Explanation:
All actions can be described as what?
How does weathering change the landscape of the earth.
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface.
Explanation:
Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. ... Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time.
Tectonic activity happens when changes to the Earth’s crust are caused by __________.
Explanation:
I may be completely incorrect but I think its shifting/plates hitting each other.
What occurs when a water’s oxygen level has been depleted because of the rapid growth of algae?
A.
evaporation
B.
accumulation
C.
eutrophication
D.
transformation
Answer:
The answer is C. eutrophication
Answer:
eutrophication
Explanation:
Insufficient dissolved oxygen in the water can cause: death of adults and young reduced growth failed eggs and larvae changes that occur in the species in various water bodies.
Which term names the type of weathering that changes the size of a rock, but not its composition?.
Answer:
Mechanical Weathering. Mechanical weathering, also called physical weathering, breaks rock into smaller pieces. These smaller pieces are just like the bigger rock, just smaller. That means the rock has changed physically without changing its composition.
Explanation:
The main emphasis of Buddhism is placed on __________.
A.
fasting and purification
B.
meditation and moral behavior
C.
attending church and donating money
D.
focusing on family and respecting tradition
Answer:
B. meditation and moral behavior
Explanation:
No need for one
Carbon-14 has a half life of 5730. If a sample contained 70 mg originally, how much is left after 17190 years
Answer:After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left. after three half lives or 17190 years, 8.75 g of C-14 will be left.
Explanation:
explain the difference between land use and land cover
Answer:
Land cover refers to the surface cover on the ground, whether vegetation, urban infrastructure, water, bare soil or other. ... Land use refers to the purpose the land serves, for example, recreation, wildlife habitat, or agriculture
Explanation:
hope this helps!
pls give brainliest
In no more than 3 sentences. Explain how deforestation leads to global warming.
Answer:
The trees of tropical forests, like all green plants, take up carbon dioxide from the atmosphere and release oxygen during photosynthesis. When forests are cut down, much of that stored carbon is released into the atmosphere again as CO2. This is how deforestation and forest degradation contribute to global warming.
Explanation:
What is the northernmost country in the united kingdom?.
Answer:
Scotland is the northenmost region in the United Kingdom.
A field containing soil that is 60 percent clay can hold a tremendous amount of nutrients but often has poor crop growth. What is the most likely explanation for this phenomenon
What is the largest lake in the world by surface area?.
Answer:
Caspian Sea
Explanation:
it is the largest lake by a surface area of 143000 sq. mi/371000k[tex]m^{2}[/tex]
DISCUSS THE STAGES OF DEVELOPMENT OF THE TROPICAL CYCLONE NIVAR
The stages of development of the tropical cyclone nivar
include the following:
Tropical disturbanceTropical depressionTropical stormFull-fledged tropical cyclone.What is a Cyclone?This is referred to as large winds that circulates about a centre
which has low atmospheric pressure.
It typically moves in a counterclockwise direction north of the
Equator and in a clockwise direction to the south which results
in the warm, moist air over the ocean rising upward from near
the surface and a corresponding thunderstorm.
Read more about Cyclones here https://brainly.com/question/1222463
What led to US control of the Philippines?
enlightenment
expansionism
diplomacy
idealism
Answer:
After its defeat in the Spanish-American War of 1898, Spain ceded its longstanding colony of the Philippines to the United States in the Treaty of Paris. The decision by U.S. policymakers to annex the Philippines was not without domestic controversy.
Explanation:
The factor that supports to the US in taking the control of the Philippines is expansionism. Hence, Option B is correct.
What is expansionism?
Other terms that can be used in place of expansionism are imperialism, colonialism, neocolonialism, and many more. It is that kind of practice that was done in ancient times so that territories can be expanded.
It is basically a kind of policy that was used and applied by emperors with the aim of expansion of their nation or territory. This policy was taken into practice all the time, whenever the ruling government of any nation wants to construct their empire on overseas land.
With the practicing expansionism or imperialism, when the US made use of it, all it wants is that no other country will take over the control of the Philippines islands.
Thus, Option B is correct.
Learn more about expansionism here:
https://brainly.com/question/10583021
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