Answer:After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left. after three half lives or 17190 years, 8.75 g of C-14 will be left.
Explanation:
A scientist finds a fossil that she thinks might make a good index fossil. Which characteristic does this fossil most likely have?.
Answer:
It is the remains of an organism that is found in abundance nearby.
Explanation:
Answer:
It is the remains of an organism that is found in abundance nearby.
Explanation:
Hope it helps, Have a nice day :)
Your friend says that he heard about some rocks that would glow when they were put under a certain kind of light. Can light cause rocks to glow?.
Answer:
Yes. Rocks can take in energy from the light, causing them to glow.
Explanation:
No. Light cannot alter physical objects like rocks because it is not a physical substance.
What is Flourescence ?Flourescence is the process by which the energy from a black light or UV light interacts with the chemicals in a mineral to produce a glowing effect.
Sunlight's ultraviolet rays can cause paper and cloth to lose their colour. When ultraviolet light waves are present, the compounds in coloured dyes can degrade. Sunburns can also be brought on by ultraviolet rays.
It is possible for minerals to reflect light. They become apparent to the human eye as a result. "Fluorescence" is a fascinating physical characteristic of several minerals. These minerals can briefly absorb a tiny bit of light and then release a tiny amount of light of a different wavelength.
The mineral temporarily changes colour in the observer's eye due to this shift in wavelength.
When fluorescent minerals are exposed to UV light—which humans cannot see—in the dark and then emit visible light, the colour change is particularly impressive. This phenomena is seen in the image above.
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Which geological principle states that even if most sedimentary rock layers are presently folded, they were deformed after deposition
The effect of human activity on Earth is not important to geography. Please select the best answer from the choices provided T F.
Explanation:
False because it is important
Which event of the 1800s led to increased interest in the colonization of Africa?
A. the Industrial Revolution
B. World War I
C. World War II
D. the American Revolution
The Industrial Revolution
Answer:
D american revolution
political and religious reasons and economy
China’s policy of punishing people who choose to have more than one child could be considered a violation of __________.
A.
civil law
B.
human rights
C.
property rights
D.
international law
Answer:
B. human rights
Explanation:
China's policy of punishing people who choose to have more than one child could be considered a violation of human rights.
give person above brainliest :)
Water near the equator is warmer than water at the poles. Which sentence explains why?
A) deep sea vents pumps steam into oceans unevenly
B) upwelling spew warm water toward the equator
C) dense, salty water tends to hold more heat
D) the sun heats earth and it ocean unevenly
*Environmental science*
Hi there!
You will have already be known that the sun's rays are closest to the equatorial regions than the polar regions. So the stronger heat rays reach the equator first, heating it's water faster. Within the span of time when the rays reach the polar areas (poles), the sun rays become slanted, leading it into the ocean waters.
Also, the sharpness or intensity of the rays gets weakened, thereby heating the water of polar regions less.
Using this fact, we can say that the rays falling near the equator heats the water more than the rays heating the water at poles.
Hence, we can say that D) The sun heats earth and it ocean unevenly will be your answer.
Thank you !
in the northern hemisphere, the magnetic compass will normally indicate a turn toward the south when
Answer:
A left turn is entered from an east heading :)
Explanation:
To the nearest millimeter, a cell phone is 74 mm long and 44 mm wide. What is the ratio of the width to the length?
Answer:
44:74
Explanation:
In no more than 3 sentences. Explain how deforestation leads to global warming.
What is the biggest river in the world.
Answer:
Nile river
Explanation:
Located in Africa
Legnth in miles is 4,160m
According to the AMS Climate Paradigm, modern climate and climate change are the results of a ______ system.
Answer:
human
Explanation:
According to the AMS Climate Paradigm, modern climate and climate change are the results of a human system.
What is human system?The physical component of the human organism, the human body is made up of extracellular and live cells and is divided into many tissues, organs, and systems.
Of course, humans are animals; more specifically, they are members of the order Primates, which belongs to the phylum Chordata's subphylum Vertebrata.
The human animal, like all chordates, has a bilaterally symmetrical body that, at some time during its development, developed gill slits near the throat and a hollow dorsal nerve cord.
The first two of these characteristics are only present in the human embryo; the pharyngeal gill slits are completely eliminated, and the notochord is replaced by the vertebral column. In humans, the spinal cord is the dorsal nerve cord.
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The __________ Ocean is the world’s third largest ocean.
A.
Indian
B.
Pacific
C.
Atlantic
D.
Southern
Answer:
Indian
Explanation:
Steam coming from a depression in the ground. A geologist discovers this vent in the ground with steam rising from it. After observing it for a few minutes, some water erupts from the vent. The water is extremely hot. Which feature has this geologist found? artesian well geyser spring water table.
Answer:
geyser
Explanation:
Answer:
B
Explanation:
What type of rock is formed by weathering and erosion?.
Answer:
Sedimentary Rock is formed by weathering and erosion
What causes a valley to become shallow or deep?
These geological formations are created by running rivers and shifting glaciers. Valleys are depressed areas of land–scoured and washed out by the conspiring forces of gravity, water, and ice.
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List and explain three achievements of the WHO.
Answer:
The WHO has many achievements under its belt. Perhaps the most famous of these is the eradication of smallpox, which was declared to be complete on 9 December 1979 after a long campaign. This was no easy feat, as vaccination campaigns need coordinated action to reach as many people as possible.
The Mariana Trench in the Pacific
Ocean is the deepest trench in
the world. Along its subduction
zone, there’s an area called
Challenger’s Deep, which is
known to be the deepest point
on Earth.
Answer:
i dont undersand
Explanation:
Please please help me!!!!
Answer:
The correct answer is Asia
A six-sided number cube is rolled 300 times. The results are 120 even numbers and 180 odd numbers.
How does the relative frequency of rolling an even number compare to the theoretical probability?
Select from the drop-down menus to correctly complete the statements.
The relative frequency of rolling an even number is
Choose... 1. A equal to B Greater than C Less than
the theoretical probability. The theoretical probability is
Choose...2. A 0.4 B 0.5 C 0.6
and the relative frequency is
Choose... 3. A 40% B 50% C 60%
Answer:
Expectation of an event is the total number of experiments times the peobability of occurance of that event.
For example, if a die is thrown 6 times then the expected number of times that the number is 2 is 1/6∗6=1
Explanation:
The relative frequency of rolling an even number is C)Less than the theoretical probability. The theoretical probability is B)0.5 and the relative frequency is A)40%.
The theoretical probability P is P = 3/ 6
=1/2
=0.5
The relative frequency F is F = 120 / 300 * 100 %
= 2 / 5 * 100 %
= 40 %
Therefore, 2 / 5 < 1 / 2 the relative frequency of rolling an even number is less than the theoretical probability.
What is the probability of getting an even number?The possibility of getting a fair number on the primary aspect when a couple of cubes is thrown as soon as is half of. Let's inspect the possible consequences. Permit E be the event of having a fair quantity on the first side. for that reason, the opportunity of getting a fair range on the primary facet = 18/36 = half.
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What body of water is surrounded by the asian mainland and taiwan, the philippines, and borneo?.
Answer:
The South China Sea is bounded on the west by the Asian mainland, on the south by a rise in the seabed between Sumatra and Borneo, and on the east by Borneo, the Philippines, and Taiwan.
Biologists estimate that the earth is losing several dozen species a day, causing an extinction crisis that could see _____ percent of Earth's species gone by mid-century.
Answer:
50%
Explanation:
One in five species on Earth now faces extinction, and that will rise to 50% by the end of the century unless urgent action is taken.
The tilt of earth’s axis causes the seasons because.
Answer:
The earth's spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected.Explanation:
At which position is the southern hemisphere experiencing spring?
The image includes the position and tilt of Earth in its orbit around the sun. Earth has tilted away from the sun in position A. In position B, the sun shines evenly on Earth from pole to pole. Earth is tilted toward the sun in position C. In position D, the sun shines evenly on Earth from pole to pole.
The position in which the Southern Hemisphere is experiencing Spring is:
B. Earth is tilted toward the sun in positionThis refers to the half of the earth which is to the South of the Equator and in which the five continents can be found.
With this in mind, we can see that because of the different seasons of the year, there is the different location of the Southern Hemisphere which is that the Earth is tilted towards the Sun which causes Spring.
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Where is this beautiful beach known for its pink sand?.
What was one major effect of the grand canal in china?.
Answer:
One effect of the grand canal in China was that it made transport and trade much much easier
The 20,000 year climate cycle in East Africa that ranges from extreme aridity to very wet conditions is driven by
a. Sunspot cycles
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1.1.7 two reasons why long distance air crafts usually fly in the lower layer of stratosphere
Answer:
There’s less air resistance
Less turbulence
Bad weather occurs below the stratosphere
Explanation:
1. Christina lives in London, England. If she updates her
blog at 7 p.m., at what time will the update be visible to
her readers in California?
Which type of stress causes deformation that leads to earthquakes at convergent plate boundaries? unit 3.
Answer:
Compression
Explanation:
it squeezes rocks together causing rocks to fold or fracture
