Answer:
Our best guesses are that life began somewhere between 3.5 Billion and 3.8 Billion years ago
0.007%, to put things in perspective, while it may seem like a very long time ago, the origin of our kind, Homo sapiens, is just about 300 thousand years old, or 0.007% of the planet's 4.5 billion-year history.
What proportion of Earth's history is made up of humans?The Earth is thought to have formed 4.6 billion (4600 million) years ago, but by 3.9 billion years ago, only a few hundred thousand years after the molten globe solidified, the seas began to form, and the asteroid bombardment stopped, there is proof of the earliest primitive life.
Only about 500 million years ago did complex life start to emerge, which accounts for just 12% of Earth's history.
Depending on how you define it, current Homo sapiens are only between 200,000 and 50,000 years old.
The human lineage only separated from our most recent common ancestor roughly 5 million years ago, or less than half of 1% of that period.
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how did technology shape economic production during the period 1750-1900
Answer: (1871-1914) Involved development of chemical, electrical, oil, and steel industries. Mass production of consumer goods also developed at this time through the mechanization of the manufacture of food and clothing. It saw the popularization of cinema and radio. Provided widespread employment and increased production.
Explanation: bc I learned about this in class
The period 1750-1900 is commonly referred to as the Industrial Revolution, and it marked a major shift from agrarian-based economies to industrialized ones. In this era, technology played a vital role.
Technology made great strides between 1750 and 1900, which had a big impact economy on how much was produced economically. James Watt's development of the steam engine in the late 18th century was a game-changing technological advance.
The creation of machines like the power loom, water frame, and spinning jenny revolutionized the textile sector. These discoveries made it possible to produce textiles in large quantities at reduced costs and more efficiency.
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A mineral within a metamorphic rock that can be used to narrowly constrain the temperature and pressure of rock formation is termed a (n) ________ mineral.
hey..
copper
Metamorphism occurs because some minerals are stable only under certain conditions of pressure and temperature. When pressure and temperature change, chemical reactions occur to cause the minerals in the rock to change to an assemblage that is stable at the new pressure and temperature conditionmine
Tsunamis are most commonly generated by sudden _________ movement of the seafloor during an earthquake.
Tsunamis are commonly generated by sudden displacement movement of the seafloor during an earthquake.
What are Tsunamis ?Giant waves known as tsunamis are brought on by earthquakes or underwater volcanic eruptions. The height of tsunami waves does not rise as they approach the ocean's depths. However, as the waves move inland, the ocean's depth declines, causing them to rise to ever-higher heights.
Rather than the distance from the wave's source, the speed of tsunami waves is determined by the depth of the ocean. Over deep waters, tsunami waves move as quickly as jets, only slowing down when they encounter shallow waters.
A tsunami is a set of extraordinarily long waves brought on by a significant and abrupt movement of the ocean, typically brought on by an earthquake at or near the ocean's bottom.
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How did political cartoons contribute to the debates about taxes and trade
restrictions in the years leading up to the Declaration of Independence?
Answer:
e
Explanation:
explain the degree to which the population pyramid shown can be used to predict local needs for social welfare services
Population pyramids are helpful for analyzing past and present population trends as well as forecasting the future of a region.
What is Pyramid?The Greek word "pyramis," which means "wheat cake," is where the term "pyramid" originally originates. The Greeks called the ancient Egyptian structures "pyramis" because they resembled pointy-topped wheat cakes. The word "Mer" was used in ancient Egyptian to describe the pyramids.
A three-dimensional shape is a pyramid. A pyramid's flat triangular faces unite at a common point known as the apex and have a polygonal base. The bases are joined to the peak to create a pyramid. The lateral face is a triangle face formed by the connection of each edge of the base to the apex.
A pyramid is a building or monument with a typically quadrilateral base and a triangle summit. While there are over 70 pyramids in Egypt that span down the Nile River Valley and were once the focal points of enormous temple complexes, they are not the three lonesome buildings on the Giza plateau at the border of the Sahara Desert as is commonly believed.
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The impact craters on Earth are younger than a few million years old, whereas ages of lunar craters extend back billions of years. Why is this
Answer:
Plate tectonics has erased older craters on Earth, whereas this process has not occurred on the Moon.
Explanation:
yw love :)
what is the lowest-altitude freshwater lake in the world
Answer:
THE DEAD SEA
GIVE BRAINLIEST PLZ
Easy Question!! 25 points
Which of the following numbers indicate a military alliance?
I only
II only
III only
I and III
II and III
Answer: A. I only
Explanation:
What are 5 current day cities that are on land that were once occupied by the roman empire?
Answer:
England, Wales, France, Spain, Portugal, Belgium, Switzerland, Austria, Italy, Hungary, Rumania, Turkey, Greece, Albania, Yugoslavia, Israel, Lebanon, Tunisia and parts of Germany, the Soviet Union, Morocco, Algeria, Syria and Egypt
Explanation:
more than five, some of them are countries but choose which ever one seems the best
What type of boundary does a mid-ocean ridge form at?
Answer:
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth's tectonic plates spread apart.
answer this asap please
a Answer:
Explanation:
Answer:
A
Explanation:
which of the fossil fuels is most abundant on earth?
Coal
The United States has more coal than the rest of the world has oil.
17. Why do upper-level winds in the middle latitudes of both hemispheres generally blow from west to east
Answer:
Because they are influenced by the by the earth's rotation. Winds usually blow parallel to the contour lines.
Thermal springs known as ________ are often associated with oceanic ridges, where hot water containing dissolved minerals gushes from the seafloor.
Answer:
Hydrothermal vents
Explanation:
Why in astronomy is distance measured in light 'years'?
Answer:
Measuring in light-years also allows astronomers to determine how far back in time they are viewing. Because light takes time to travel to our eyes, everything we view in the night sky has already happened. In other words, when you observe something 1 light-year away, you see it as it appeared exactly one year ago.
in which u.s. state can you find a river nicknamed the river of no return""?
Answer:
Idaho
Explanation:
Previously the most widespread land mammal on Earth, marsupials are now abundant and diverse only on what continent due to its isolation
Answer:
Marsupials are mainly found on the island of Madagascar
Explanation:
Because Madagascar has a closed ecosystem
19. How was the 2000 presidential election in Mexico different from elections of previous decades?
Voter turnout was between 63 and 64% in the elections. This historically significant election made Fox the first president elected from an opposition party since Francisco I. Madero in 1910, and the first one in 71 years to defeat, with 42 percent of the vote, the then-dominant Institutional Revolutionary Party (PRI).
Which stratigraphic principle is most frequently used to determine relative age among different kinds of geologic events
Stratigraphic principle is most frequently used to determine relative age among different kinds of geologic events is cross-cutting relations.
What is stratigraphic principle?The sequence of superposition, initial horizontality, lateral continuity, cross-cutting relationships, inclusions, unconformities, fossil succession, uniformitarianism, and catastrophism are the guiding concepts for stratigraphic principles.
The four laws are the law of superposition, law of original horizontality, law of cross-cutting relationships, and law of lateral continuity
The principle of superposition - in a vertical sequence of sedimentary or volcanic rocks, a higher rock unit is younger than a lower one. "Down" is older, "up" is younger. The principle of original horizontality - rock layers were originally deposited close to horizontal.
Thus Cross-cutting relations would be the answer that relatively for geologic events.
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precipitation is most prevalent within which latitude belts?
Descending air dominates in the subtropics (20° to 30° North and South latitude) and the poles. The global distribution of precipitation shows that the wettest areas on Earth are in the "rising air" zones, while the driest areas (subtropical deserts and the even drier polar areas) are in the "descending air" belts.
why does water flow from lake superior to the st lawrence river and out to the atlantic
Answer:
Because the Polar Ice Sheet in the center of the continent melted about 10,000 years ago and some of that water is still flowing due to gravity down to the ocean via the Great Lakes and the St Lawrence River.
Explanation:
Lake Superior's water flows into the St. Lawrence River and then out to the Atlantic Ocean. Due to the Polar Ice Sheet melting in the middle of the continent around 10,000 years ago, part of that water is still flowing by gravity through the Great Lakes and St. Lawrence River to the ocean.
How is the ocean connected to Lake Superior?With more than 1,000 boats calling to Duluth/Superior each year, the busiest inland port in the nation, it takes around seven days by boat to travel the 2,343 miles (3,770 kilometers).
The Great Lakes-St. Lawrence Seaway is a deep draft waterway that runs through the center of North America for 3,700 kilometers (2,340 miles) from the Atlantic Ocean to the head of the Great Lakes. The System's St. Lawrence Seaway segment stretches from Montreal to the middle of Lake Erie.
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what tectonic activity causes the earthquakes in japan?
Answer:
Compressional stress along the border of the plates causes earthquakes in Japan.
Explanation:
Hope this helps!
Streams in the Great Basin of Western United States are rare among world streams because they _________________
Explanation:
Seafloor spreading and subduction are the most important types of tectonic activity that shape ocean basins. Seafloor spreading happens along the boundaries of tectonic plates that are moving apart from each other. These areas are called mid-ocean ridges.
what tectonic activity causes volcanoes in mexico and guatemala?
Answer:
The Cocos Plate in the Pacific Ocean is subducted beneath the Caribbean Plate. The subduction causes volcanoes around that area.
Explanation:
Hope this helps!
The tectonic activity causes volcanoes in Mexico and Guatemala is the Cocos Plate.
What does tectonic activity mean?According to the scientific hypothesis of plate tectonics, the underground movements of the Earth create the primary landforms. The hypothesis, which became firmly established in the 1960s, revolutionized earth sciences by describing a wide range of phenomena, such as mountain-building processes, volcanic eruptions, and earthquakes.
According to the widely recognised scientific hypothesis known as plate tectonics, the Earth's lithosphere is made up of many sizable tectonic plates that have been steadily moving for nearly 3.4 billion years.
There is tectonic activity near plate borders. On Earth, plate boundaries are places where two crustal plates collide.
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In what way do you think a strong economy can
help strengthen a democratic government?
Answer:
It depends on what choices Congress will choose for it
Explanation:
and it depends on what the Democratic party to decides if the economy is helping them or hurting them
quienes eran los empleados Gold y Silver
Answer:
Explanation:
El oro se utilizó para pagar a los técnicos, capataces y otros trabajos especializados. La plata se utilizó para pagar a los trabajadores y otros trabajadores no calificados. Los mejores trimestres, vacaciones y otros beneficios estaban reservados para las personas en la lista de "oro", según los registros.
HELP 15 POINTS (DUE TMORROW)
What types of businesses are found in Australia?
How do igneous rocks/minerals affect a sedimentary or metamorphic rocks shape, color, hardness, etc
Answer:
id help you but i can understand that :(
how does the length of the hypotenuse in the right triangle compare to the length of the legs
Answer:
A^2 + B^2 = C^2. A and B are the lengths of the legs and C is the length of the hypotenuse.
Explanation:
This question can be answered by providing a formula known as the Pythagorean Theorem: A^2 + B^2 = C^2
Answer:
The length of the hypotenuse in a right triangle is longer than the other two sides.
Explanation:
what is the absolute location of A
Answer:
104 E , 69 S
(If not that, then vice versa:)
69 S, 104 E
Hope that helps!
