1 What are the three types of movements that take place on the Earth's crust?
The longitude of the prime meridian is
Answer:
The prime meridian is at the longitude 0. It is the base for all the rest of the longitudes, running through Greenwich, England.
which kind of projection spreads out lands near the edges
Which level of organization is pictured?
A cell
B tissue
C organ
D organ system
The correct answer is B. Tissue
Explanation:
The tissue is a basic level of organization that is composed of dozens or thousands of cells together, and that composes organs. The image presented illustrates tissue because each of the circles or shapes in it depicts a cell. Moreover, in this tissue, all cells are quite similar in structures and functions. Besides this, the image corresponds to adipose tissue that stores fat or lips and it is part of organs such as the skin. According to this, the correct answer is B.
The ratio of boys to girls in a class is 5:3. There are 32 students in the class. How many more boys than girls are there?
Answer:
8 more boys
Explanation:
5 times 4 equals 20
3 times 4 equals 12
12 plus 20 equals 32
There are 20 boys and 12 girls, and 20 minus 12 equals 8
therefor there are 8 more boys than girls
PLS HURRY!!!
Which of the following statements about South Africa during apartheid is most accurate?
A. The majority of South Africa's population was white, and non-whites were legally discriminated against.
B. Whites held all positions of power in South Africa, even though they were a minority in the population.
C. All races had the right to vote in South Africa, but white citizens tended to win elections.
D. Although some discrimination existed, non-whites participated in all aspects of society.
Answer:
I think its B, not fully sure
Answer:
B
Explanation:
explain why mantle convection occurs
Answer:
Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. [1] [2] The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle .
Explanation:
The mantle is heated from below (by the core), and in hotter parts, it rises (is buoyant), whereas in colder areas, it sinks.Convection cells are created as a result, which causes mantle material to move horizontally near the Earth's surface.
Mantle convection occurs for what reason?
Because relatively hot rocks are less dense and rise in a gravitational field while relatively cold rocks are denser and sink, mantle convection happens.When hot rocks rise, heat is advected upward, and when cold rocks fall, cold is advected downward; this counter flow is the same as an upward heat flux. Several tectonic plates that make up the lithosphere are continuously being generated or eaten at plate borders.As mantle is added to a plate's expanding boundaries, which is related to the spreading of the seafloor, accretion takes place.The rising element of mantle convection is up welling beneath the spreading centers. When highly heated particles in a liquid or gas move and replace less heated particles, convection takes place.Convection is the process through which heat energy is moved from heated areas to colder ones.When heated, gases and liquids both expand .A convection cell cannot form without a heat source.The heat source warms the fluid, which is then pushed away.The fluid inevitably cools after starting to lose heat.The flow of newly heated matter drives this colder, denser matter back toward the initial heat source. Convection, a thermally driven process whereby deep heating causes material to expand and become less dense, leading it to rise while being replaced by complementary cool material that sinks, is the primary method of heat transport in the Earth's mantle. Any fluid, including boiling water, soup (where the cells may be recognized by the particles they transport, like as rice grains), the ocean, or the surface of the Sun, can produce convection cells, also known as Hadley cells. Convection causes the water at the bottom to expand and become lighter when water is heated.The cooler molecules then sink to the bottom as the heated ones rise to the top.Then, these colder molecules warm up. Convection is the process of warm fluid continuously rising above cold fluid.For instance, if you heat a bucket of water and dip your hand into it before removing half of it, the other hand will indicate that the water is chilly.Convection is the cause of this .The difference in temperature between the two fluid components allows the heat energy to be transported by convection.Hot fluids have a tendency to ascend while cold fluids have a tendency to sink due to this temperature differential.Convection current is produced as a result within the fluid. These currents receive their heat from both the mantle and the Earth's core.Mantle material rises slowly through the asthenosphere in the form of hot columns.The hot material expands out and pushes the colder stuff out of the way near the top of the asthenosphere. The commonly accepted, oversimplified theory for why tectonic plates move is that they are propelled by currents in the upper mantle, the slowly flowing layer of rock just beneath the Earth's crust.Colliding currents cause plates to collide.Currents that diverge pull them apart. Mantle convection is the term used to explain how the mantle moves when heat is transferred from the blazing core to the brittle lithosphere.The mantle's temperature gradually drops over extended periods of time as a result of below- and above-surface heating and cooling.To learn more about mantle convection refer
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Answer in complete sentences
How can remittances from migrant workers help BOTH the Host's and Origin Country's economy?
Was Columbus a failure because he failed to find the western sea route to Asia? Why or why not? Explain in at least three sentences.
Answer:
He was not a failure
Explanation:
Columbus was searching for a route, but found something much greater than that that went on to benefit his homeland and many other European countries. Additionally, his initial belief of there being a western sea route to Asia was based on European maps at the time (they hadn't discovered the Americas yet, so they didn't know the path would be blocked). His trip was about discovering a new path, not traveling on one that already existed.
No he was not and i'm to lazy to make a sentence so what the person above me said
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It's understandable that scientists know the most about the crust, and less about deeper layers? Why
Answer:
It is easier to study the crust because it is easier to access it.
Explanation:
Answer:
bcause there are new life or nonliving forms decomposing and rocks are formed
Explanation:
as opposed to knowin' lava 'nd mlten rock is underneath
Some species of sharks are on the verge of extinction because of shark finning. Washington, California, Guam, and Hawaiʻi prohibit selling, trading, and possessing shark fins. Do you believe sharks should be protected? Should the United States and other countries support this ban? Why or why not?
Answer:
Sharks should be protected and that should be supported by all countries because the majority of the shark species are keystone species.
Explanation:
There are hunderds of different species of sharks throughout the oceans and seas. They are predators in the vast majority of cases and have a very important role in marine ecosystems. To put it simply, if the sharks go extinct, the marine ecosystems will crumble as we know them and there will be drastic changes in them.
Unfortunately, like many other marine animals, the sharks and their body parts tend to be very popular in a lot of countries around the world, and not having bans in a lot of countries means that they are heavily fished and many species have been driven to the verge of extinction. Considering their huge importance for the ecosystems and the consequences that will emerge with their elimination all countries, including the USA, should fully ban the fishing of sharks and using them as food or using their body parts, or if not a total ban then to be strictly regulated.
