Answer:
2.62 years
Explanation:
The half life of a material is the time taken for half of the number of radioactive atoms in a radioactive material to remain.
If a radioactive material is cut into pieces, each piece has the same half life as the whole material.
Hence, if Strontium-147 is cut into pieces, each piece will have a half life of 2.62 years, just as the whole material.
What evidence, first published by Abraham Ortelius, supports Alfred
Wegener's theory of continental drift?
A. Similar animals live in different parts of the world.
B. Sensitive instruments measure plate movement.
C. Faraway places share similar fossils.
D. The coasts of South America and Africa fit together.
Answer:
Abraham Ortelius put forward as evidence for the theory of continental drift the fact that the coasts of South America and Africa fit together.
Explanation:
A is not correct because the animals that live in the present would hardly prove anything when it comes to continental drift.
B is not correct because such instruments didn't exist during the time of Ortelius.
C is not correct because this was not a piece of evidence put out by Ortelius, but it was Wegener that did that.
D is correct because Ortelius based his theory around the shapes of the continents and that their edges seemed to fit, with the eastern coastline of South America and western coastline of Africa being the most noticeable example.
6. Which of these items is not among a geologist's equipment?
A. goggles
B. magnifying glasses
C. gloves
D. geometrids
what does the theory of plate tectonics explain that continental drift theory could not explain?
- unusual distribution of fossils in the southern hemisphere.
- evidence of glaciation in the plains of africa.
- movement of continents despite the dense oceanic floor.
- the jigsaw like fit of the continents
Answer:
-movement of continents despite the dense oceanic floor
Explanation:
Answer:
Movement of continents despite the dense oceanic floor.
the following sentence correct or not :they treated them roughly
I'm not sure if you're asking if the sentence is grammatically correct but if so then yes. But I will say that if a reader only sees that sentence they would be confused on who they or them was since it doesn't provide background information. so in that sense it could be wrong since it confuses the reader on the subjects of the sentence. but thats only if your're trying to identify the noun of the sentence if yk what i mean
What is the capital of N. Ireland?
Answer:
Belfast
is the capital of n ireland
Answer:
Belfast
Explanation:
Its on the web
what three tetonic plates are found along the prime merdian?
Answer:
eurasian, african, antarctic
Explanation:
The enduring legacy of communist control of Bulgaria is _________.
- the national government
- a system of hydroelectric
- a contaminated environment
- the modern Bulgarian military
D. the modern Bulgarian military
Answer:
A) The national goverment
Explanation :
Bulgaria is a parliamentary democracy. Until 1989, a communist government controlled the country. Bulgarians ratified the current constitution in 1991. Citizens 18 and older may vote. The president commands the armed forces and selects the prime minister and cabinet. The 240 members of the National Assembly make up the legislative body. The Constitutional Court decides if laws agree with the constitution.
Physical features often influence where people live. Which type of environment typically has the highest population density?
Answer: flat, fertile plains and river valleys
Explanation: that was the correct answer
from the above we can therefore say that the answer
The Physical Features with the highest population density are Lowland plains, flat river valleys and deltas and volcanic areas with fertile soillearn more from
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A 30 foot ladder is leaned against a wall.
If the base of the ladder is 6 feet from the
wall, how high up the wall will the ladder reach?
Answer: 90
Explanation:
= 1/2 x 30 x 6
= 1/2 x 180
after simplifying them you get 90ft.
Therefore, the ladder will reach 90ft high up the wall.
Please mark as brainliest if you want.
Look at the map. The area labeled A indicates a subduction zone where the
Pacific Plate is sliding under South America. Which process is likely to occur
in this area?
D
Eurasian
Plate
North
American
Plate
Pacific
Caribbean
Plate
Plate
Philippine
Plato B
Cocos
Plate
Ring
of
Fire
A
Indo-Australian
Plate
Nazca
Plate
South
American
Plate
Antarctic
Plate
Answer:
Oceanic plate being destroyed
Explanation:
The convergence at this margin between the oceanic pacific plate and the Continental South American plate causes subduction here.
At this margin, there is crustal destruction.
As the denser Pacific plate subducts under the less dense continental crust, it is increasingly destroyed. Most convergent margin of this type leads to the destruction of the crust. Usually, on an adjacent side, there is a mountain building. Basically, at this margin, the most important thing is that the crust is being destroyed.Which of the following statements about volcanoes is false?
Falling ash from volcanic eruptions can cause great destruction.
Volcanoes can change global patterns of climate
Volcanoes can build mountains.
Volcanic ash has serious effects on local areas but does not have a global impact.
Answer:
volcanos can change global patterns of climate is false
did athen
Boys have to leave home at 7 years of age.
Answer:
yes and they also had to start military training at 7 yr old and if you were not strong enoughtat birth they would kill you
Explanation:
Answer:
No they did not.
Explanation:
Spartan kids did because they were all about military, while Athens was about peace and learning.
50 percent of Costa Ricans come
from what type of descent?
Answer:
The majority of the Costa Rican Population comes from Europe since it was a Spanish colony for a long time. 83.6% of the Ticos are white or mestizo, 6.7% mulattoes, 2.4% Native American and 1.1% black or Afro-Caribbean.
Which one is false? The average employee in Tokyo commutes(travels) 90 mins to work No car can be registered in Tokyo without proof that the owner has a place to park it. The Japanese train and subway system is so advanced that the Japanese buy fewer cars today than in 1960
Answer:
The Japanese train and subway system is so advanced that the Japanese buy fewer cars today than in 1960
Explanation:
The Tokyo subway is a part of the rapid transit system that includes Tokyo Metro and the Toei Subway which is in Greater Tokyo area of Japan.
The following statement is false:
The Japanese train and subway system is so advanced that the Japanese buy fewer cars today than in 1960
Explain what differentiates the Earth’s crust and lithosphere.
Answer:
The curst is the
thin layer of distinctive chemicals composition overlying the ultramafic upper mantle. The lithosphere is rigid outer layer of the earth required by plate tectonic theory.
Explanation:
I hope this answer help you
Answer:
Earth’s crust is distinguished from the lithosphere because the crust refers to a compositional later and the lithosphere is a mechanical layer, the solid layer near the surface of the Earth. The crust is mostly composed of alumino-silicate minerals while the lithosphere includes some of the solid regions of the upper mantle which is mostly ferro-magnesium silicates.
Explanation:
just finished the test
E2023
(Please help. 18 points!!!) Which of the following are resources of the Amazon rain forest?
Check ALL that apply.
A. History
B. Plant Biodiversity
C. Land
D. Water
Answer:
B, C&D
Explanation:
These are the answers
Answer: it’s all of them for ap*x
Explanation: i just took it rn
PLEASE ANSWER ASAP!!!!
Match the following items. 1. means it belongs to you Rhode Island 2. a time when money loses its value George Washington 3. a meeting of people or organizations for a special purpose New Hampshire 4. President of Constitutional Convention inflation 5. refused to attend the Constitutional Convention Virginia Plan 6. its congress favored the big states Preamble 7. its congress favored the small states Patrick Henry 8. did not sign the Constitution convention 9. its vote made the Constitution legal unalienable 10. the introduction of the Constitution New Jersey Plan
Answer:
1. Unalienable - means it belongs to you
2. Inflation - a time when money loses its value
3. Convention - a meeting of people or organizations for a special purpose
4. George Washington - President of Constitutional Convention
5. Patrick Henry - refused to attend the Constitutional Convention
6. Virginia Plan - its congress favored the big states
7. New Jersey Plan - its congress favored the small states
8. Rhode Island - did not sign the Constitution
9. New Hampshire - its vote made the Constitution legal
10. Preamble - the introduction of the Constitution
Explanation:
Hope this helps!! c: (Got it right)
Match the following items
1. means it belongs to you - Unalienable
2. a time when money loses its value - Inflation
3. a meeting of people or organizations for a special purpose - Convention
4. President of Constitutional Convention - George Washington
5. refused to attend the Constitutional Convention - Patrick Henry
6. its congress favored the big states - V(old dominion) Plan
7. its congress favored the small states - New Jersey Plan
8. did not sign the Constitution - Rhode Island
9. its vote made the Constitution legal - New Hampshire
10. the introduction of the Constitution - Preamble
What is Constitution?A constitution is a fundamental document that defines rules and regulations, laws and legislation as well as the power and authority of the government to conduct the functioning of any country.
The Constitutional Convention aids in deciding how the United States will be governed. Three branches were established under the constitution, each with the power to manage national activities.
Learn more about Constitution, here:
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plzzzzzz helpppppppp. Using complete sentences, explain what made the environment of the Aztec city Tenochtitlan unique. Identify at least
two ways that people adapted to the environment there.
Answer:
Explanation:
It was unique because Built on an island on a Lake, it had a system of canals and causeways that supplied the hundreds of thousands of people who lived there. he Aztecs were able to settle there because no one else wanted the land. At first, it wasn't a great place to start a city, but soon the Aztecs built up islands where they could grow crops and start an economy.
___ turn rocks into soil.
Answer:
Rocks turn into soil through the process of weathering. Weathering is when rocks are broken down into smaller pieces.
Explanation:
hope this helpsss
Answer:
Weathering and Erosion
Explanation:
Weathering happens when plants break up rocks with their growing roots or plant acids dissolving rock. Once the rock has been weakened and broken up by weathering it is ready for erosion. Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity.
All Central American countries have which of the following features in common?
Answer:
A common geographic feature among Central American countries (there are seven: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama) is the chain of rugged mountains that extends through the middle of the region. The highest point of this chain of mountains is 14,000 ft in Guatemala.
Explanation:
Which of the following is an example of a plant responding to an external stimulus?
Science
Answer:
Plants too are the living organisms of the ecosystem. They too respond to the external environmental stimuli. Phototropism is the best example for it. All of us know that for plants to grow light is necessary . Hence all plants respond to the changes in the environment , and respond to it by growing their stems, roots, or leaves toward the direction of stimulus or away from the stimulus.How did the way the Persian government handled religion throughout the empire help preserve social and political order?
Answer:
In the Persian Empire, since the period of Achaemenid dynasty there was an existing principle of religious tolerance, that was spread throughout the whole country.
Explanation:
Even during the reign of Cyrus the Great, who was the first important ruler of the Empire a religious tolerance was established. He was known in history as a ruler who freed Jews from Babylonian captivity, but also as someone who brought edict throughout the country in which a principle of tolerance dominated. This was continued during the period of his successors.
How much of the world's population is in Asia?
O 1/5
O 2/5
O 3/5
O 4/5
SRSLY CAN SOMEONE ACTUALLY HELP- IM MARKING BRAINLIEST TOO!
After the Mexican Revolution, the new government promised "land, bread, and justice for all." What does this slogan tell you about the living conditions of the people before the revolution?
Answer: This tells you that the mexican people were likley living in famine, being treated poorly and didn't have property of their own.
Explanation:
PLS HELP, WILL REWARD BRAINIEST!!
Why did independence from Spain have little affect on the lives of most of the people living in Central America?
Answer:
Because wealthy people were the ones who had control over most of the things and they were the ones who continued to run economics but the common people in Central America did not agree with that decision
What are the problems with getting electricity in the arctic?
Answer:
The main problems with bringing electricity to the Arctic are the climate and the condition of the soil.
Explanation:
The Arctic is one of the hardest areas in the world when it comes to bringing electricity to it. While the economic factor plays a role, it is still not the crucial one, as there can be enough investments without any particular problem to set up the infrastructure. The problems are in maintaining, preserving, and stabilizing the electrical infrastructure.
The problems come mainly because of the climate and the condition of the soil. The climate is very cold which affects the amount of electricity that is delivered, but the bigger problem is the constant powerful winds that are breaking up the installations. For most of the year, the soil is frozen, which is not a great starting point, but an even bigger problem is that it defrosts in the summer, the soil is oversaturated with water and not stable at all, so the electricity polls fall or lean.
b) What is the formuls to calculate the perimeter of triangle
Answer: P=a+b+c
Explanation:
Answer:
b
Explanation:
Base+side+side=perimeter
Why were epics so important to historians?
Answer:
They entertained the citizens
Explanation:
Which desert covers half of Uzbekistan?
Answer:
The Aral Sea is situated in Central Asia, between the Southern part of Kazakhstan and Northern Uzbekistan.
Explanation:
Which example is a body fossil?
A. shrimp burrow
B. dinosaur bone
C. an ornithopod track
D. dinosaur footprint
Answer:
B. dinosaur bone
Explanation:
A dinosaur bone was part of the dinosaur's body during the prehistoric times, so therefore it's body fossil.