How have humans contributed to the increase in earthquake activity?

Answers

Answer 1

Answer: Humans had contributed to the increase in earthquake activity by building dams and reservoirs, extracting water from underground, and building geothermal power plants.

Answer 2

Answer: Yes. We drill into the earth to mine for gas, oil and minerals and construct massive dams and, as a result, have caused at least 200 quakes of more than 4.5 magnitude in the past 160 years, says Christian Klose, a researcher at Columbia University who studies man-made quakes.The best-known case is the earthquake caused by the Zipingpu Dam, in China's Sichuan province, in 2008. Zipingpu held 42.3 billion cubic feet of water, the weight of which precipitated what Klose says is the largest human-triggered earthquake to date: a 7.9-magnitude quake that killed nearly 80,000 people. Klose estimates that Zipingpu, with nearly 320 million tons of water pressing down on a fault line, contributed enough stress to trigger the quake through a process called impoundment. "If you push your finger on top of a paper plate, the plate will bend," he says. "That same effect works on all the tectonic plates on the Earth's crust." The quake occurred two years after the dam's completion, and its epicenter was a mere three miles from the structure.Authorities in Basel, Switzerland, shut down the city's geothermal plant after a 3.4 quake in 2006. Tapping geothermal energy involves boring into rock miles beneath the Earth's crust in search of steam as a source of energy. Engineers in areas without much water, such as Basel, sometimes create boreholes by way of hydraulic fracturing, or "fracking," which involves forcefully injecting water to create fissures. Fracking can generate small tremors, but the real damage may happen as excess liquid pools in the cracks between rocks, making them less stable. Although dams have caused some 76 earthquakes, mining is responsible for at least 137 earthquakes, over half the number of man-made quakes to date.In 1989 a 5.6-magnitude earthquake hit Newcastle, Australia, the direct result of coal mining. Extracting millions of tons of coal added stress to the fault lines, but the real danger resulted from the water that was extracted during mining. For each ton of coal produced, Klose estimates, 4.3 times as much water was pumped out of the ground, a necessary step to prevent flooding inside the mine. But removing so much water dramatically altered the stability of the earth surrounding the mine. Klose says the earthquake caused $3.5 billion in damage—an amount that nearly equaled the profit of all the coal produced by the mine over its 200-year history.

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The part of the eye responsible for fine-tuning the refraction of incoming light is the _____. lens retina optic nerve cornea

Answers

The answer is the lens.

The eyeball is filled with a water-like fluid. In front of the eyeball, there is the cornea. It is a transparent structure that refracts light. A portion of light passes through the pupil which allows light to enter the eye. The amount of light that will pass through the pupil depends on dilatation of iris. Once the light enters the eye, it enters the lens. Lens of the eye is able to change its size and that way is responsible for fine-tuning the refraction of the light. The light later reaches the retina.

Answer:

The part of the eye responsible for fine-tuning the refraction of incoming light is the LENS

Explanation:

I have this same assignment :)

-cherry

Which of the following is LEAST likely to result in speciation?A) Random mating among members of a large population of a species
B) Occurrence of hybridization between individuals from two diﬀ erent species
C) Development of diﬀ erent mating behavior by some members of a species
D) Emigration to a specialized microenvironment by some members of a species
E) Formation of a physical barrier that blocks gene fl ow between members of a species

Answers

the least likely result of speciation from teh possibilities you presented would be a0 random mating between members of the species.

all species work on the same wavelength when it comes to mating - it's survival of the fittest, and every male wants a healthy female to bear his offspring, and every female wants a strong male to protect that offspring. they don't have babies just for the heck of it :)

How did the use of groundwater change from preindustrial times to industrial times?a.
Groundwater use decreased from preindustrial times to industrial times.
b.
Groundwater use increased from preindustrial times to industrial times.
c.
Groundwater use remained virtually the same from preindustrial to industrial times.
d.
Groundwater was not used during preindustrial times.

Answers

The correct option is B.

Ground water refers to those water sources that are found underneath the ground in rocks, sand and soils. The quantity of ground water that were utilized during the pre-industrial period is very small compare to the amount that is utilized during the industrial time. And this has led to a significant decrease in the amount of ground water available today. Other factors that had led to shortage in ground water include pollution and lack of precipitation.

Due to the invention of drilling tools, groundwater use increased from preindustrial times to industrial times.

What is groundwater?

Ground water refers to water that is found underground in between layers of rocks.

In the preindustrial times, most water used was surface water. However, during the industrial times with the invention of equipments that could drill deep underground, the use of ground water increased.

Therefore, groundwater use increased from preindustrial times to industrial times.

Learn more about groundwater at: brainly.com/question/9617

Plant-like protists are considered to bea. chemotrophs
b. heterotrophs
c. autotrophs
d. none of these

Answers

The correct answer is C. Autotrophs

Explanation:

In biology, a protist is a type of organism that cannot be classified as a plant, fungus or animal but whose cells contain a nucleus and therefore are classified as eukaryotic. Additionally, protist organism can be plant-like organisms, fungus-like organisms or animal-like organisms depending on whether they share certain features with animals, plants or fungus. In the case of plant-like protists, these are usually unicellular organisms that obtain energy from photosynthesis as plants and therefore they are mostly autotrophs as they do not feed on other organisms to obtain energy but produce it.

c. autotrophs.
The food chain goes like this: sun ---> autotrophs ---> heterotrophs ---> decomposers

Which of the following choices includes two structures that are found in plant cells, but not in animal cells?A.) cell wall
B.) chloroplasts , ribosomes
C.) lysosomes, mitochondria
D.) cell wall, large central vacuole

Answers

Answer:

the answer is d hope this helps

Krebs cycle occurs in the ___ of a eukaryotic cell. Question 27 answers matrix of the mitochondrion cristae membranes of the mitochondrion nucleus cytoplasm

Answers

The answer to the question stated above is matrix of the mitochondria or matrix of the mitochondrion
Krebs cycle occurs in the matrix of the mitochondria of a eukaryotic cell.
Additional information:
>matrix of the mitochondria is the fluid filled interior of the mitochondria.

Final answer:

The Krebs Cycle occurs in the matrix of the mitochondrion of a eukaryotic cell, which is a part of the process of cellular respiration, generating energy for the cell.

Explanation:

The Krebs cycle, also known as the citric acid cycle or the tricarboxylic acid (TCA) cycle, takes place in the matrix of the mitochondrion of a eukaryotic cell. This cycle is a crucial part of cellular respiration, the process by which cells generate energy. During the Krebs cycle, the pyruvate molecules derived from glucose are oxidized and, in turn, produce ATP (adenosine triphosphate), the main source of cellular energy, and other high-energy compounds. The matrix of the mitochondrion provides the necessary environment and enzymes for this cycle to occur effectively.

Learn more about Krebs Cycle here:

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