1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DerKrebs [107]
3 years ago
6

A spruce tree trunk has been found preserved in glacial till. Samples taken from the trunk have been found to contain approximat

ely 12.5% of Carbon-14. How many half-lives have elapsed since this tree was buried?
Geography
1 answer:
faust18 [17]3 years ago
6 0

Answer:

three half-lives

Explanation:

Converting 12.5% to decimal gives 0.125

If one half life is 0.5.

0.5*0.5*0.5 gives 0.125

Thus 3-half lives has been elapsed

You might be interested in
Which of the following statements best describes the Sepoy Rebellion? A. Indians rebelled against British colonial rule in 1857.
Ostrovityanka [42]

Answer:

The answer is A.

Explanation:

4 0
2 years ago
Read 2 more answers
Analyze the map below and answer the question that follows.
Gekata [30.6K]

Answer:

i think it is D

4 0
2 years ago
Read 2 more answers
Which of the following statements is most accurate?
Sonbull [250]

Answer:

A

Explanation:

The physical environment has a massive effect on human activities. Throughout history the impact of the effect of the physical environment has changed, but the influence has always been there. Some ways in which the physical environment affect humans are:

  • weather and climate
  • natural disasters (volcanic eruptions, earthquakes, tsunamis)
  • terrain

Human activities also have a significant impact on the physical environment. Some examples of ways that humans affect the physical environment are:

  • deforestation
  • extraction of resources
  • anthropogenic climate change
  • modification of topography
  • contamination of the seas
5 0
3 years ago
Trenches form at sites where?
Sergeu [11.5K]
More rarely, Ocean trenches can be formed when two plates carrying oceanic crust meet.The Mariana Trench,in the South Pacific Ocean,is formed as the mighty Pacific plate  subducts  beneath the smaller ,less dense Philippine plate.
7 0
3 years ago
On which of the planets (other than Earth) could a human being step out of a spacecraft and survive without any protective gear
Vesnalui [34]

Answer:

There isn´t other planet on which we could survive unprotected

Explanation:

Still no other planet has been found that has an atmosphere capable of retaining oxygen and decreasing solar radiation so that the person does not need as much oxygen equipment as a special suit to avoid the different types of raciations that can reach the planet .

It is also believed that it is possible to find on a future planet similar to Earth in which you can live without protection.

4 0
3 years ago
Other questions:
  • Which of the major oceans is roughly the size of Antarctica
    11·1 answer
  • Where is Russia in relation to the United States
    6·1 answer
  • Supplementary angles are two angles whose measures add up to 180
    10·1 answer
  • What are the different types of migration
    7·1 answer
  • Compare the age pyramid of Brazil with that of Germany
    9·1 answer
  • How much of the earth is covered in rainforest?
    8·1 answer
  • The earth has a magnetic north and south. How does this help up with evidence to support the theory of Continental Drift?
    8·2 answers
  • What caused the Pre-Columbian societies of Latin America to develop such unique and advanced cultures? Why and how?
    6·1 answer
  • Which of the following phrases is the best definition of the world map?
    13·1 answer
  • What is the main material being subducted at an ocean-continent convergent boundary?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!