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Answer:

A

Explanation:

Answer:

d

Explanation:

Answer:

Earthquakes occur in the crust or upper mantle, which ranges from the earth's surface to about 800 kilometers deep (about 500 miles).

The strength of shaking from an earthquake diminishes with increasing distance from the earthquake's source, so the strength of shaking at the surface from an earthquake that occurs at 500km deep is considerably less than if the same earthquake had occurred at 20 km depth.

Also, the depths of earthquakes gives us important information about the Earth's structure and the tectonic setting where the earthquakes are occurring. The most prominent example of this is in subduction zones, where plates are colliding and one plate is being subducted beneath another. By carefully plotting the location and depth of earthquakes associated with a subduction zone, we can see details of the zone's structure, such as how steeply it is dipping, and if the down-going plate is planar or is bending. These details are important because they give us insight into the mechanics and characteristics of the deformation in the subduction zone.

Within continents, and along continental plate boundary transform faults such as the San Andreas, faults are only active in the shallow crust - perhaps to depths of approximately 20 km.

Accurately determining the depth of an earthquake is typically more challenging than determining its location, unless there happens to be a seismic station close and above the epicenter. So generally, errors on depth determinations are somewhat greater than on location determinations.

Answer:

B. They were felt for many weeks after the original earthquake

Explanation:

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Answer:

The phases change as the moon revolves around Earth, different portions of the moon's sunlit surface are visible from Earth. Thus, from the perspective of Earth, the appearance of the moon changes from night to night. Not only does the apparent shape of the moon change, its position in the sky also changes.

Answer:

Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved. This is because they are already in locations where sediment is likely to bury them and shelter them from scavengers and decay.

Explanation:

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Answer: b. Different plant types can add or remove nutrients within a soil, thereby changing the type of soil that is formed.

Explanation:

Some plants require more a of particular nutrient than others and so will draw more of these nutrients from the soil whilst giving away some of the ones that they do not want. This is one of the reasons that some plants grow better in a particular area than not.

When these plants give or take away nutrients, they would be changing the type of nutrient composition of the soil and this is what makes crop rotation so effective.

Answer: the crust.

Explanation: Because the crust does not have to support as much weight. For example, if you were to say the layer closest to the center of the Earth experiences the least amount of pressure, that would not be true because the layers closer to the center of the Earth have to support even more weight above them then the layer farthest out.

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Answer:

B

Explanation:

dark blue all over the continent

Answer:

Mainly lower-middle income

Explanation:

centra america is the littel bit between mexico and south america

the correct answer is the yellow one.

Answer:

3.igneous and sedimentary and sedimentary and metamorphic.

4. Marble- metamorphic

pumice-igneous

slate- metamorphic

obsidian- igneous

limestone-sedimentary

5. a) A rock is a solid mass of geological materials. Geological materials include individual mineral crystals, inorganic non-mineral solids like glass, pieces broken from other rocks, and even fossils. A rock can be composed of only one type of geological material or mineral, but many are composed of several types.

b) Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. When lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools very quickly.

c) Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological detritus (minerals) or biological detritus (organic matter).

d) sedimentary rock consits of fossils.

e) Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

6. Any four uses of rocks are:

•Making Cement (Limestone) (Sedimentary Origin)

•Writing (Chalk) (Sedimentary Origin)

•Building Material (Sandstone) (Sedimentary Origin)

•Bath Scrub (Pumice) (Igneous Origin)

•Kerb Stone (Granite) (Igneous Origin)

Colder weather can decrease plant enzyme activity. This then disrupts plant nutrient intake because plants secrete enzymes to digest surrounding materials for soil. Consequently, this can stunt growth or more severely cause them to die

Answer:

the amount of total precipitation

Answer:

We humans are remarkable creatures. From our humble beginnings in small pockets of Africa, we have evolved over millennia to colonise almost every corner of our planet. We are clever, resilient and adaptable―perhaps a little too adaptable

Answer: domination of a government or social group by females

Explanation:

Matriarchy refers to the social system whereby women the primary power positions are held by the women in the society. These positions can relate to social privileges, roles of political leadership etc.

Matriarchal is a domination of a government or social group by females. An example of the matriarchal society is the Mosuo of China where inheritance is passed down through the female line. In these society, the women also have their choice of partners.

Answer:

C

Explanation:

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Both South Africa and England have a similar populations. However, these countries have different population densities. Population density is how crowded the country is with people. South Africa is a much larger country in terms of its area while England has a smaller land area. If they have similar populations, but different amounts of space, one is going to have a higher population density. Since England has less space, it has a higher population density as there are more people in a smaller space. There is more land area in South Africa, so this naturally makes it less crowded.

Have a wonderful day and keep on learning! :D

Answer:

This happens by the process of natural selection. By natural selection, the nature of the species gradually changes to become adapted to the niche. If a species becomes very well adapted to its environment, and if the environment does not change, species can exist for a very long time before they become extinct.

The ones that will be discussed in this article are competition, predation, herbivory and symbiosis. These are not the only types of species interactions, just the most studied — and they are all parts of a larger network of interactions that make up the complex relationships occurring in nature.

Explanation:

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Answer:

yes it's depand upon nature of soils...

But not always.

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Explanation:

Much land on or near the Tropic of Cancer is part of the Sahara Desert, while to the east, the climate is torrid monsoonal with a short wet season from June to September, and very little rainfall for the rest of the year

Answer:

it's true

Explanation:

Indian standard time is maintained by National Physical Laboratory

Answer:

I think the answer is better ways to do things

Answer:

D. A substance, energy source, or organism used by humans

Explanation:

Its not man made like the others

Answer:

The woman's suffrage movement is important because it resulted in passage of the Nineteenth Amendment to the U.S. Constitution, which finally allowed women the right to vote

Answer:

B

Explanation:

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Answer: B.

Explanation: hope this helps

The land should not be developed.

The stakeholders can do shutdown their businesses and stop doing business activities to have their voices heard. This piece of land should not be developed, it can be preserved because this is the only land left where the organisms live.

If this land is also developed, then the extinction of animals occurs and the whole biodiversity is eliminated from that area so in my opinion, the land should be preserved for the animals so it is recommended that the land should not be developed.

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Answer: answer is D

Explanation: Because in the hydrolysis process it involves the mixture of two or more substances , and is the breakdown of a substance when combined with water chemically.

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The hydrolysis process works in chemical weathering and involves Water mixed with other elements to create chemicals. Thus the correct answer is D.

When molecules in rainwater and running water mix with minerals and rocks, it is called chemical weathering, and the result is a modification or degradation of the rocks and minerals.

Weathering can result from a response between rainwater and the elements in the rock. The greatest example of chemical weathering is when iron corrodes because of oxidation.

A compound is typically dissolved during hydrolysis, which is the combination of an organic molecule with water to generate two or more new compounds. It will be illustrated via the transformation of cellulose into glucose units.

Therefore, option D Water mixes with other elements to create chemicals is appropriate.

Learn more about the hydrolysis process, here:

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Answer:

Black Sea

Explanation: