Asteroids have caused the most recent mass extinction of species. Thus, option A is appropriate.
Asteroids, sometimes known as minor planets, are stony byproducts of the early solar system's formation, which took place about 4.6 billion years ago. There are 1,299,015 known asteroids at this time. The main asteroid belt, which is located between the planets Jupiter and Mars and orbits our Sun, contains the majority of this old space debris.
The Cretaceous-Paleogene catastrophe event is the most recent extinction event and the sole one that can be shown to have been brought on by a large asteroid impact. All nonavian dinosaur species, making up about 76 percent of all species on the earth, perished.
Thus, option A is correct.
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Final answer:
The most recent mass extinction of species, known as the Holocene or Anthropocene extinction, is primarily caused by human activities, which differs from past extinctions caused by natural catastrophic events like asteroid impacts and volcanic activity.
Explanation:
The most recent mass extinction, sometimes referred to as the Holocene or Anthropocene extinction, is attributed to human activities. Thus, the correct answer to what has caused the most recent mass extinction of species is C. Humans. This sixth mass extinction is characterized by the significant loss of species that is ongoing and is closely linked to humanity's impact on the environment, including habitat destruction, pollution, overhunting, and climate change. Notable examples of human-induced extinctions include the passenger pigeon and the dodo bird. This modern mass extinction is distinct from past mass extinctions, such as the one that occurred 65 million years ago caused by an asteroid impact that led to the demise of the dinosaurs, or the Late Permian mass extinction possibly caused by volcanic activity.
What was one of the causes of the decline of Rome?
a. deflation
b. wars
c. deficits
d. education
Wars were the main reason for decline of rome
Answer:
b. wars
Explanation:
How many states share a border with Mexico?
Answer:
Four
Explanation:
There are four U.S. states bordering Mexico. The four states are: Texas, New Mexico, Arizona and California. Texas shares borders with the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the southwest, while the Gulf of Mexico is to the southeast.
What is the most visited city park in the u.S.?
Forest Park, St. Louis has 15 mil each year
By what year do scientists predict plastic will outweigh fish in the ocean?
Answer:
about two years ago
Explanation:
What is underground formation containing groundwater?
Answer:
Groundwater is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water.
Underground water can be called creeks, lakes, streams and more
An underground formation that contains groundwater is known as an aquifer. Aquifers are usually rocky formations or soil where water collects and moves through, serving as vital sources of drinking water and irrigation.
Explanation:The underground formation containing groundwater is generally referred to as an aquifer. An aquifer is typically a rocky formation or soil in the earth's crust where water collects and moves through the horizontal and vertical spaces. These formations can range from sand and gravel to fractured bedrock like limestone or sandstone. Groundwater held in aquifers is an important source of drinking water, irrigation for agriculture, and it supports river and wetland ecosystems.
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At the East African Rift, the African Plate is separating into two smaller plates that are moving in opposite directions. Based on this, which type of boundary exists at the East African Rift?
Answer:
Divergent plate boundary
Explanation:
The African continent, the second largest in the world, is splitting in two parts. The African plate on which the African continent lies is actually after heavy geologic activity which causes it to split in two parts that are moving in opposite directions. This is a prime example of a divergent plate boundary. As the African plate gradually separates into the Nubian and Somali plates, they will open up a gap between them that will constantly grow. That gap will fill in with the ocean waters, splitting the two land masses with a natural barrier, as well as giving rise to a new sea, or maybe even an ocean over the course of millions of years.
Why are volcanoes not found at transform boundaries?
The transform fault boundaries are not having the same characteristics as the convergent or divergent plate boundaries. The movement at the convergent and divergent plate boundaries is caused by pressure from below, thus vertical one, and also when they collide one of them moves diagonally downwards, or rather subducts. That leaves gaps at the plate boundaries and big cracks through which the magma can penetrate. At the transform boundaries it is a different situation. The plates engaged in this type of boundary are neither moving away from each other, nor they are colliding, but instead they slide past each other. By sliding past each other, the plates actually close in any gap that might have enables for magma to come out on the surface, so we don't see volcanoes along this type of boundaries. What is typical about the transform plate boundaries is the formation of faults that form because of the stress, and are parallel to the boundary.
Volcanoes are not found at transform boundaries because these boundaries involve two tectonic plates sliding past each other horizontally, not vertically. Without vertical plate movement, subduction, and thus magma formation, does not occur, so volcanoes typically can't exist at these boundaries.
Explanation:Volcanoes are generally not found at transform boundaries because of the way these types of boundaries function. All tectonic boundaries, including transform boundaries, play a role in the movement and formation of the Earth's crust. However, transform boundaries are characterized by two tectonic plates sliding past each other horizontally.
At a divergent boundary or a convergent boundary, one can typically find volcanoes because these boundaries involve the vertical movement of tectonic plates. In a convergent boundary, for example, one plate is pushed beneath another in a process called subduction, leading to magma formation and thus causing volcanic activity. On the contrary, transform boundaries do not have this vertical movement, hence there is no subduction, and without subduction, there is no magma formation, and consequently, there are no volcanoes.
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Which statements describe the focus of an earthquake? Check all that apply.
It creates stress in rock.
It develops in the lithosphere.
It is the starting point of an earthquake.
It lies above the surface where rock breaks.
It begins about 100 kilometers below Earth’s surface.
Answer:
it is the starting point of an earthquake
Explanation:
Answer:
B,C and E
or
2, 3 and 5
Explanation:
The rising average global temperature is having the greatest effect on the __________.
Answer:
Arctic
Explanation:
The global temperature is on the rise, though not as much as it is often portrayed in the media. It is a slow process, but even though the changes in the temperature are seemingly small, they manage to cause changes, at some places almost unnoticeable, at some places more dramatic. The area that is most affected so far is the Arctic. The reason for this is that the Arctic is mostly covered with ice, but ice over an ocean not over land. As the temperature rises, the edges of the ice are melting, thus entering the ocean waters, and the cycle of the ocean currents. As the water circulates, it peaks up warmth in the lower latitudes, moves toward the Arctic and manages to penetrate further north and contributes to further melting of the ice. The process continues constantly, so the little by little the Arctic is changing its appearance, which unfortunately causes lot of problems for the flora and fauna adapted to it.
What is NOT likely to happen at a divergent boundary? A) Mountain formation B) Rift valley C) Seafloor spreading D) Volcano formation
A divergent boundary involves two tectonic plates moving apart, which can lead to phenomena like volcanic activity, rift valleys, and seafloor spreading. Mount formation, however, is more associated with convergent boundaries where plates move towards each other, leading to buckling and folding of the crust. Therefore, mountain formation is least likely to occur at a divergent boundary.
Explanation:A divergent boundary is a type of tectonic boundary where two plates move apart, often resulting in phenomena like seafloor spreading, rift valleys, and volcanic activity. This is due to the upwelling of molten rock from the mantle that fills the gap between the plates, forming new crust and often creating volcanic activity.
On the other hand, mountain formation is typically associated with convergent boundaries, where two plates move towards each other. This pressure causes the Earth's crust to buckle and fold, raising chunks of rock to form mountains. Examples of this include the formation of the Alps through the collision of the African and Eurasian plates.
Therefore, the process least likely to occur at a divergent boundary is A) Mountain formation. This is mainly because the key process in these areas is the pulling apart of tectonic plates, rather than them coming together which leads to mountain building.
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The option that is NOT likely to happen at a divergent boundary is Mountain formation (A).
Divergent boundaries are locations where tectonic plates move away from one another, resulting in the formation of new crust.
Divergent boundaries commonly occur along mid-ocean ridges where seafloor spreading happens.
These boundaries often lead to the creation of rift valleys and can also result in volcanic activity due to magma rising up from below the Earth's surface.
Mountain formation, however, typically occurs at convergent boundaries where plates collide and push the Earth's crust upwards.
Therefore, the formation of mountains is not something you would expect at a divergent boundary.
Plant material that accumulates and hardens on the floor of a swamp is
known as peat. If a layer of sediments accumulates on top of the peat, its
weight, after thousands of years, can compress the peat to form coal. Which of the following types of coal probably
formed from the greatest pressure?
F Anthracite (the hardest coal)
G Bituminous coal (softer than anthracite)
H Subbituminous coal (softer than bituminous)
J Lignite (the softest coal)
Answer:
F Anthracite (the hardest coal)
Explanation:
Coal is a sedimentary rock that is formed from plant materials. These plant materials must have been trapped and compacted in an environment where they are not able decay. Such an environment is a swamp.
The first grade of coal that forms initially in such an environment is called PEAT. Peat is soft coal that still contains some plant materials. It has a high moisture content and the amount of carbon is still quite low.
With increasing pressure and compaction, PEAT grades into LIGNITE which has more carbon atoms in it. Lignite is more combustible although it is quite soft too. Lignite grades into SUB-BITUMINOUS coal and then BITUMIOUS coal.
The highest grade of coal is ANTHRACITE which is a hard coal. It has very little moisture content and rich carbon percentage in it. Anthracite yields more energy compared to other forms of coal. Anthracite is basically coal that forms at the greastest pressure. Beyond this pressure, a metamorphic transformation occurs and the coals changes to graphite.
Based on increasing pressure:
PEAT< LIGNITE< BITUMINOUS COAL < ANTHRACITE
The _____ is the chronicle of evolution over millions of years of geological time engraved in the order in which fossils appear in rock strata.
Answer:
The fossil record is the chronicle of evolution over millions of years of geological time engraved in the order in which fossils appear in rock strata.
The, fossil record, is the chronicle of evolution over millions of years of geological time engraved in the order in which fossils appear in rock strata.
5. The gizmo is set up so you can see the top of Earth and the moon on the left hand side and what the moon looks like from Earth on the right hand side. In the left hand view, you can look at the Earth-moon system. Earth is in the middle of the screen. The sun’s rays are coming from the right of the screen. Where would you have to be to see this view? ANSWER
Answer:
you would have to be in space.
Explanation:
perspective is directly over the North Pole.
PLEASE HELP
What institution remained strong in Poland even after the Communist takeover of the country?
a.
the Roman Catholic Church
b.
Solidarity
c.
the Jewish community
d.
the Democratic party of Poland
the roman catholic churches
hope this helps :)
If you wanted to find a region rich in a particular type of rock, which type of map would you use?
Answer:
a geologic map
Explanation:
Answer:
To find a region rich in a particular type of rock, I would go for a geologic map.
Explanation:
A geologic map of a particular area specifically displays the terrain/landform in regard to the physical features of the area and their compositions. It not only indicates the availability of a specific feature but also shows its distribution of the feature over the area. The standard geologic maps have different colors and letters assigned to each of the different features for the convenience of the readers of the map. In most cases, geologic maps only serve geologists and prove of no use to the ones who have no knowledge of the discipline of geology.