answer.
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
Anna11 [10]
1 year ago
11

Radioactive carbon dating works because the amount of carbon-14 is constant while the organism is living and once the organism d

ies the amount of carbon-14
Biology
1 answer:
zubka84 [21]1 year ago
7 0

Once the organism dies the amount of carbon-14 decreases exponentially.

The exponential, radioactive decay of carbon 14 is used to estimate the death dates of organic material.

Living organisms have approximately the same ratio of C12 to C14 in their tissues. Once the organism dies C14 decays into nitrogen 14. Decay of C14 to nitrogen 14 changes the ratio of C12 to C14. The ratio of C12 to C14 in dead material can be compared to the ratio when the organism was alive to estimate the date of its death. Radiocarbon dating can be used on different samples such as bone, cloth, wood and plant fibers.  


You might be interested in
A pregnant female is rh negative and at 28 weeks gestation. the child's father is rh positive. the mother is given an injection
nirvana33 [79]

Anti-D immunoglobulins or anti-D (RH) immunoglobulins are a variety of immunoglobulins (IgG). These are proteins that play an important role in our immune system.

Anti-D immunoglobulins are obtained from human blood taken from volunteer donors. They are administered in the pregnant woman in case of incompatibility of rhesus between her and the child.


The CPT codes are:

90384 an 90385 for intramuscular use .

90386 for intravenous use.


The icd-10-cm code is Z29.13.

7 0
1 year ago
Read 2 more answers
Which of the following examples can cause gene flow between populations?
yanalaym [24]
The answer is <span>bird droppings that contain seeds from a different location.

</span><span>Gene flow includes a transfer of alleles from one population to another. So imagine a population of plant A on location 1 and another population of plant A on location 2. They cannot interchange their genes. But if birds drop seeds from location 1 and those seeds get to location 2, gene flow may occur.</span>
6 0
1 year ago
Read 2 more answers
Environmental Effects Summary
Tpy6a [65]

Answer:

Methemoglobinemia

Explanation:

Methemoglobinemia (also known as the blue baby syndrome), is a condition with multiple etiologies which is associated with the lack of oxygen in the blood. This syndrome affects the function of red blood cells by altering the amount of hemoglobin protein, which carries and distributes oxygen to the body. Methemoglobinemia may be acquired by exposure to drugs and/or toxins. In this regard, it has been shown that high levels of nitrates in the water may induce this syndrome in infants.

4 0
1 year ago
If sugar is sprinkled on a strawberry, osmosis will cause
Goshia [24]

Answer:

The correct answer is c. water to move out of the strawberry, making it smaller

Explanation:

Osmosis is the process refers to the movement of liquid molecule from the area of high solute concentration to an area of low solute concentration through a semipermeable membrane to equalize the osmotic balance.

Osmosis is important for any cell to maintain a proper osmotic balance of the cell. So if sugar is sprinkled on a strawberry the solute concentration outside the strawberry cells will increase which will result in water release from the cell.

This release of water from the cell will shrink the strawberry and make it small.  Therefore the correct answer is c.

3 0
1 year ago
Explain in detail how galen, a physician during the middle ages, expanded on hippocrates’ theory of the four humors and explain
Ann [662]
<span>Hippocrates believed that there are four humors in human body which need balance for a healthy being. These were:
Blood, phlegm, yellow bile, and black bile.</span>
Galen expanded the idea of the humors and introduced four temperaments which were these:
choleric (hot / dry), melancholic (cold / dry), sanguine (warm / moist), and phlegmatic (cold / moist).
Another expansion Galen did was that he gave each humor/temperament physical and psychological qualities and said that even the food items have an association with the certain humor, those foods can effect certain humor in certain ways.
8 0
1 year ago
Other questions:
  • a sponge 1cm in diameter and 10 cm tall can move 22.5 L of water through its body each day. what volume of water will it pump th
    10·1 answer
  • ancient oracles often entered so-called “ecstatic states” when they received visions. the oracles claimed that these ecstatic st
    5·2 answers
  • Which of the following outcomes is a benefit of conventional agriculture?
    9·2 answers
  • Earth's axis of rotation is almost parallel to the plane of its orbit. Please select the best answer from the choices provided T
    5·2 answers
  • Which statements describe freshwater sources? Check all that apply.
    8·2 answers
  • In general, a signal transmitted via phosphorylation of a series of proteins A) brings a conformational change to each protein.
    9·1 answer
  • Does the virus use any energy while replicating?
    5·1 answer
  • What was the narrator referring when he said that the flood risk to Tokyo sounded like something out of a disaster movie?
    7·2 answers
  • Eye color in most mammals is dependent on the number of inherited pigment genes (melanin) that are additive in their effects. If
    9·1 answer
  • Black fur (B) is dominant to white fur (b) in guinea pigs. An F1 cross was conducted and resulted in 100% heterozygous guinea pi
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!