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
Molodets [167]
3 years ago
14

Most moths of a particular population died when the chestnut blight fungus that they were dependent on got wiped out but some mo

ths did survive which mechanism explains the reasons for this
Biology
1 answer:
k0ka [10]3 years ago
3 0
The answer is natural selection. 


Natural selection is one of the fundamental components of advancement, alongside change, movement, and hereditary float. Natural selection is the procedure amid which a few people of an animal types survive and exchange their qualities to their posterity, and others don't. The ones that survived more likely than not had some variety in their genotype that helped their survival.
You might be interested in
PLSSSS HELP IF YOU TURLY KNOW THISS
Verizon [17]

Answer:THE ANSWER IS=

C-PERSONA

5 0
2 years ago
Read 2 more answers
If the cell of an organism contains a nucleus, then the organism is a(n)
True [87]
Answer is B

a eukaryote is any cell that contains a nucleus

7 0
2 years ago
The most violent volcanic activity is associated with
iren2701 [21]
Stratovolcanoes seems to fit, but I do not know what the list of answer choices is. Hope this if helpful :)
7 0
2 years ago
Is blood clotting an example of a positive or negative feedback mechanism? Explain your answer based on the description of the m
serg [7]

Answer:

Blood clothing is an example of positive feedback.

This type of feedback mechanism is useful to the body because it multiplies the factor that intervenes in clotting accelerating the process.

If a toxin affects the molecules that signal for platelets the feedback will not be effective enough to produce clotting and the body will keep bleeding.

Explanation:

Blood clotting is an example of positive feedback due to the fact that when the vascular endothelium is damaged  platelets will go to this area and activate themselves once they are in contact with the collagen fibers of the damaged structure. When the platelets are activated they will release the contents that is stored in their granules. One of the contents is a Gq-linked protein receptor cascade,  that will increase the concentration of calcium in the platelets. Calcium activates protein kinase C, which, in turn, activates phospholipase A2 (PLA2). PLA2  will modifies  an  integrin membrane  increasing its affinity to bind fibrinogen. The activated platelets change their  shape , and the fibrinogen cross-links with the integrin membrane aiding  in  the aggregation of adjacent platelets. After this the coagulation cascade takes place. there are two pathways the extrinsic  and the extrinsic one.

The extrinsic pathway will be activated due to tissular factor released  by the platelets and the intrinsic pathway will be activated due to endothelial collagen. The final product of both pathways is factor x.

Factor x will transform prothrombin into thrombin will activate the conversion of fibrinogen into fibrin. Thrombin will form a net of fibrin that will the clot.

A cascade reaction is useful because every component of the cascade are related making a quick reaction once that one of then is activated and can activate other or more factors.

If a toxin affects the molecules that signals for platelets, platelets will not go to the damaged area and in consequence there will not be thrombin and fibrin to form the clot together with platelets.

7 0
3 years ago
How has the Douglas-fir adapted to enable its survival in the taiga biome?
-Dominant- [34]
<span>How has the Douglas-fir adapted to enable its survival in the taiga biome?
a.
low growing
b.
perennial
c.
waxy needles<=====
d.
survive on limited nutrients</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • From the origins of the human species some 3 million years ago until about the year 1800, most people in the world lived in whic
    9·1 answer
  • Explain a rock’s life cycle
    11·1 answer
  • What is the history of lyra
    10·1 answer
  • How has increased global travel boosted the spread of certain species?
    7·1 answer
  • Farming is ___________ due to dense vegetation
    5·2 answers
  • What type of succession<br> will occur if a parking lot<br> is abandoned for 1000<br> years?
    13·2 answers
  • Explain how bacteria become resistant to antibiotics
    12·1 answer
  • This type of inheritance pattern shows BOTH traits in possible offspringand is not a blending or intermediate
    10·1 answer
  • Somatic cells can also be called
    8·1 answer
  • 3. The table below shows factors that could be present in a population. Next to each factor,
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!