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
Rudik [331]
3 years ago
11

an animal carcass had 24 grams of carbon 14 when it was alive and 3 grams when its fossilized remains were discovered how old is

the fossil?
Biology
1 answer:
KengaRu [80]3 years ago
3 0
The carbon 14 left from this animal is 3 grams of 24 grams which is: 3g/24g= 1/8 times of its original mass. Then, the age of the animal fossil would be:

final weight= initial weight * (1/2) ^ time/half-live
1/8 initial weight = initial weight  * (1/2) ^ time/half-live
log2 1/8= log2 (1/2) ^ time/half-live
-3= -time/half-live
time= -3 * -(half-live)
time= 3 half-live

If the half-live is 5730 years, the age would be: 3* 5730= 17.190 years.
You might be interested in
Which term names part of the peripheral nerves system A spinal cord B brain C sensors​
Dimas [21]

Answer:

Spinal cord

Explanation:

The PNS consists of the nerves and ganglia outside the brain and spinal cord.

6 0
2 years ago
Read 2 more answers
Conventional wisdom holds that the development of separate species happens quickly, most often when populations become separated
Genrish500 [490]

Answer: D. allopatric; breakdown

Explanation:

Allopatric speciation is a type of speciation whereby individuals of the same biological population becomes separated up to the extent that there will no longer be gene flow between them.

3 0
3 years ago
The ________ sphincter, or valve, controls food movement from the stomach into the small intestine.
AnnyKZ [126]
The pyloric valve control food movement from the stomach into the small intestine.

8 0
3 years ago
What is the purpose of oxygen in photosynthesis
arsen [322]

Answer:

Explanation:

<h2><u><em>In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.</em></u></h2>
7 0
3 years ago
Read 2 more answers
_____ communicate information in the opposite direction, from the brain and nervous system to muscles and glands.
yulyashka [42]

Answer:

The correct answer would be efferent neurons.

Efferent neurons are the motor neurons which communicate information in the opposite direction as compared to the afferent neurons, that is, they communicate information or response impulses from the brain or central nervous system to the muscles or glands.

The response impulses results in the movement of the muscles or activation/deactivation of certain gland

In contrast, afferent neurons are the sensory neurons which carry impulses from the receptors to the central nervous system.

5 0
3 years ago
Other questions:
  • In the desert food web shown below, which of the following best describes the transfer of energy between cacti and mule deer?
    14·1 answer
  • Laura pushes on the pedals of her bike
    9·1 answer
  • What is the green pigment called?
    11·1 answer
  • A child has been brought to the emergency department by child's grandparent. the grandparent tells the nurse, "it is important t
    7·1 answer
  • What animal can cause terrible things to the ecosystem?
    15·2 answers
  • Angela is curious about how Clomid works to stimulate her ovaries. Her doctor told her that this drug works by "tricking the bra
    12·1 answer
  • A food web diagrams the interactions between organisms based on which organisms others are eating. A scientist is using a food w
    10·2 answers
  • How would altering the ph of an ecosystem affect the organisms that live there? Relate to enzyme function.
    5·1 answer
  • Which side of the heart contains only deoxygenated blood? Only oxygenated blood?
    14·1 answer
  • Write a sentence that relates your model to processes that take place inside your own cells. Your answer should include some for
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!