How can I find the answers to the 2015 Erya Global Change and Earth System Science assignment

This should not be searchable, but you can ask the person, or directly ask the teacher.

The answer comes from the Erya General Education Topic Library.

How many stages of air pollution do European and American countries experience?

When the continents collide and weld together to reach a certain size, the thick continent prevents the heat from being released from the mantle below it, a phenomenon known as ().

Continental Thermal Melting Effect.

The cyclic structure and sedimentary pattern of continental facies are simpler than those of oceanic facies.

Error: The development of the East Asian monsoon has two stages: the ancient monsoon and the modern monsoon.

Correct snowball earth interrupts the evolution of organisms.

The rate of ascent of False Everest is.

37mm/a

What percentage is the porosity of glacier ice? Twenty.

In the sixties and seventies of the 20th century, almost all the high-tech buddies begged me to tell me, like you, in scientific research, I can usually ask a good mountain, the mountains on the earth can be infinitely high.

The formation of the primitive earth.

Before the formation of the earth, there were many asteroids in the universe revolving around the sun, and these planets collided with each other to form the primitive earth, when the earth was still a hot fireball, and as the collision gradually decreased, the earth began to cool slowly from the outside to the inside, producing a thin layer of hard shell - the earth's crust, at this time the earth was still in a hot state. A large amount of gas is ejected from the inside of the earth, which carries a large amount of water vapor, which forms a circle of atmosphere surrounded by the periphery of the earth, the position of the earth from the sun is not too close to the water vapor is evaporated by the sun, and the size of the earth itself has enough gravity to pull the atmosphere, so the earth will have a unique atmospheric environment, and the atmosphere begins to rain after the formation, and the original ocean is formed.

The vast majority of scientists believe that the universe comes from a large **, and then the particles produced begin to gather to form various stars.

Some of these particles accumulate to form the sun, and some particles around the sun slowly accumulate to form these planets and various moons and other star materials. After that, the Earth slowly evolved into a living planet.

1) Changes in the speed at which waves propagate within the Earth.

2) Transverse Gutenberg The longitudinal wave suddenly descends and the transverse wave disappears completely.

3) The thickness of the earth's crust is uneven, with the continental crust being thick and the oceanic crust being thin and composed of rocks.

4) D--- liquid H---solid.

Test question analysis: (1) Combined with the diagram, human beings use the change of the propagation speed of **wave speed in the ground to study the inner sphere of the earth. (2) The propagation speed of longitudinal waves is faster than that of transverse waves.

The interface that divides the crust and mantle is the Moho interface, whereas the interface that divides the mantle and core is the Gutenberg interface. Therefore, the B interface shown in the figure is the Gutenberg interface, which can be analyzed by direct reading, and the transverse wave disappears after the Gutenberg surface, and the longitudinal wave velocity decreases. (3) The circle j shown in the figure is located above the Moho interface and is judged to be the earth's crust.

Distribution characteristics of the earth's crust: the continental crust has a double layer and the ocean crust has a single layer. Therefore, the continental crust is thicker, and the oceanic crust is thinner.

And the earth's crust is made of rocks. (4) Figure d is the outer core, and the transverse wave cannot pass through, indicating that it is in a molten state or a liquid state. H is the core and is solid.

Comments: The key to solving this problem is to grasp the propagation characteristics of transverse waves and longitudinal waves, and the main basis and boundaries of the earth's inner sphere, and analyze it with the use of graphical information, which is generally difficult.

(1) Spontaneous generation theory is almost as old as creationism, and people have come to the conclusion that lower organisms are naturally produced by non-living matter based on their own observations of many superficial phenomena, such as maggots produced by carrion and lice born if they do not bathe for a long time

The theory of cosmogenesis believes that there are countless planets in the universe, and life may have originated from other planets People propose that life on earth is the "embryo" of other planets or universes, based on the fact that all organisms on the earth have a unified genetic code and rare elements are buried in the enzyme system and hold a special important role

Chemical Evolution: Advocates the study of the origin of life from the law of motion and change of matter It is believed that under the conditions of primitive earth, inorganic matter can be transformed into organic matter, and organic matter can develop into biological macromolecules and multimolecular systems until the emergence of primitive life forms at the end

Biologicalism: Organisms can only originate from living things, and non-living matter can never spontaneously produce new life at any time

2) Scientists have found that there are no fossils in the oldest strata, proving that the earth was originally inanimate The older the strata, the simpler, lower, and more aquatic organisms that formed fossils In the later strata, the more complex, higher, and more terrestrial organisms formed fossils, thus proving that the earth was initially inanimate and experienced the process from inanimate to animate, and the general trend of biological evolution is: from simple to complex, from low to high, from aquatic to terrestrial

3) All kinds of organisms in nature generally have a strong reproductive ability, so as to produce a large number of offspring And the food and space that organisms rely on to survive are limited, and organisms have to fight for survival in order to obtain food and space Biological individuals in nature have the characteristics of heredity and variation, and only those individuals with favorable variations are easy to survive in the struggle for survival, and these variations are passed on to the next generation, while individuals with unfavorable variations are eliminated Organisms in nature, through fierce survival struggles, The adaptors survive and the unadaptables are eliminated, this is natural selection Organisms continue to evolve through heredity, variation, and natural selection Therefore, Darwin's theory of natural selection cannot explain the nature of heredity and variation

4) The evolution of human beings is usually divided into four stages: Australopithecus, Homo sapiens, Homo erectus, and Homo sapiens. Capable people can make simple tools (stone tools); Homo erectus knew how to make stone tools for different purposes and learned to use fire; Homo sapiens had learned to make fire by hand, could make fine stone and bone tools, could sew animal skins and clothing with bone needles, and could hunt and fish with javelins and spears

Therefore, the answer is: (1) the theory of life; chemical evolution; organic small molecules;

2) Simplicity; Complex; Inferior; Higher; Aquatic; Terrestrial.

3) natural selection;

4) Australopithecus; Homo erectus;

First, the premise of life on Earth is that the Earth is located in the habitable zone of the sun, which is the area where water can be liquid. The other planets of the solar system are not in the habitable zone, or are only on the edge (such as Venus and Mars). Of course, this is only a necessary condition, not a sufficient condition.

Another reason is that the sun has been in a stable main order for the past five billion years and is now, which can provide stable conditions for the development of life on Earth. One of the reasons why other planets have no life is because most of the planets discovered so far are not in suitable conditions, such as the planets that are too large and are gaseous planets, like Jupiter. Although some are stony planets, the stars are too close and the temperature is too high.

And even if some planets have suitable conditions in all aspects, because there are not many discoveries and the process of life formation is complex and slow, there is not necessarily life. Secondly, even if there is life, it is difficult to find it because it is far away from us.

The earth's environment is regulated by the front of the living system, and it is smooth and bright in (Ginmori) APast. b.Right now.

c.Future. d.Localized.

Correct answer: ABC

Earth system science is the traditional science of geoscience. () Zheng Chong.

a.Correct grip.

b.Mistake. Correct answer: B