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
katrin [286]
3 years ago
8

The blood group B is almost absent in Native Americans, whose ancestors arrived in very small numbers about 10,000 years ago. Wh

ich factor is responsible for this phenomenon?
Biology
1 answer:
Taya2010 [7]3 years ago
8 0
The factor that is responsible for the phenomenon of the blood group B being almost absent in Native Americans whose ancestors arrived in very small numbers about 10,000 years ago would be called the 'founder effect'. 
You might be interested in
How is natural selection similar to selective breeding? How is natural selection different from selective breeding?
shusha [124]

Answer:

Natural selection and selective breeding can both cause changes in animals and plants.the difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. for this reason selective breeding is sometimes called artificial selection.

Explanation:

Hope this helped Mark BRAINLEST!!!

6 0
3 years ago
As you may know, people’s physical and emotional health interact: One can affect the other. The characters in "In Another Countr
Margaret [11]

Answer:

To preserve their mental health, the characters must keep in mind that all suffering is temporary and although it is difficult, they will overcome this situation. What can help characters deal with their situations is by reasoning about the following questions:

"What led me to this situation?"

"What are my limitations in dealing with this type of problem?"

"How could I have acted to minimize the impacts of suffering?"

"Would any action by me prevent these disorders?"

Explanation:

Every time that the characters evaluate themselves and correct their behaviors, they will be able to follow the emotional evolution that will help them to deal with all their suffering. In this journey, each one has a different rhythm. In fact, we are different in almost every aspect of our physical and mental makeup. The variations in intelligence are enormous and also those related to aggressiveness, intensity of fears and the ability to deal with them. It would not be fair, therefore, to tell a character (or a person) that he is suffering from "nonsense". What is small for one may be large for the other. Underestimating the pain of others is not synonymous with help, but a lack of empathy.

We do have a duty and obligation, in the name of our own well-being, to try to get rid of our pains as quickly as possible, but that does not mean not feeling them. Some people do it more easily, while others "fall in love" with the problem and think about it in a recurrent and obsessive way. They silence the word, but the mind goes on chattering.

4 0
3 years ago
What is the relationship between structure and function of molecules
DIA [1.3K]

Answer:

PS:Can I be brainliest.

Have a nice day

Explanation:

Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.

8 0
3 years ago
Read 2 more answers
What will be the theoretcal yield of tungsten(s) ,W, if 45.0 g of WO3 combines as completely as possible with 1.50 g of H2? WO3(
7nadin3 [17]

Answer:

Theoretical yield of tungsten produced = 35.6836915592  ≈ 35. 68 g

Explanation:

The chemical equation can be expressed as follows;

WO3 (s) + 3H2(g) → W(s) + 3 H20(g)

Note that the equation is already balanced.

Molecular Mass of WO3= 183.84 + 15.999 × 3 = 183.84 + 47.997  = 231.837 g

From the equation 1 mole of WO3 reacts with 3 mole of hydrogen molecule.

Molecular mass of tungsten(W) = 183.84 g

1 mole of tungsten was produced from the chemical equation.

WO3 (s) + 3H2(g) → W(s) + 3 H20(g)

From the equation,

231. 837 g of WO3 produces 183.84 g of tungsten

45.0 g of WO3 will produce ?

grams of tungsten produced = 183.84 × 45 /231.837

grams of tungsten produced = 8272.8 /231.837

Theoretical yield of tungsten produced = 35.6836915592  ≈ 35. 68 g

 

7 0
3 years ago
Our existing body of scientific knowledge was developed
rosijanka [135]
It was developed by scientists throughout history of mankind
7 0
3 years ago
Other questions:
  • Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and are allowed to replicate for 1 generatio
    8·1 answer
  • Identify twice substances that can cause changes in DNA
    13·1 answer
  • What is human waste made of?
    6·1 answer
  • Amy thinks integrated natural resource management (INRM) is a good idea. Therefore, Amy MOST LIKELY believes that people should
    13·2 answers
  • Human hair color is a classic, if oversimplified, example of recessive epistasis. Red hair is caused by a recessive allele r. Ho
    6·1 answer
  • What chemical reactions do monomers of lipids go through to form lipids?
    9·1 answer
  • The structure labeled A in figure 10-3 is called the?
    10·1 answer
  • Name two models used<br> to show the transfer of<br> energy in an ecosystem
    13·1 answer
  • What is a biotic factor at a beach?
    10·1 answer
  • Help I need help help
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!