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
taurus [48]
3 years ago
8

Mosquitoes in tropical regions can carry and transmit the malaria parasite to humans. The mosquitoes used to be killed in these

regions by spraying them with the insecticide DDT. The mosquitoes that were earlier sensitive to DDT are now not killed by DDT and grow and multiply even in the presence of DDT. How can you explain this phenomenon?
Select one of the options below as your answer:


A.
All of the mosquitoes must have undergone a mutation for DDT resistance and produced similar kind of resistant offspring, which evolved into a DDT resistant population.


B.
Some of the
mosquitoes must have undergone a mutation for DDT resistance and produced similar kind of resistant offspring, which would have been selected by nature.


C.
All of the mosquitoes must have slowly increased their tolerance level to DDT and ultimately would have become completely resistant to DDT.
Health
2 answers:
ASHA 777 [7]3 years ago
4 0

I think it would be c.


I hope this helps good luck! :)

DIA [1.3K]3 years ago
3 0
Right answer is iption b.hopefully it helps.
You might be interested in
discuss the suitability of Sophie’s diet before training and after training for her cross country training performance.
Tom [10]
I think that Sophie should maybe not have as many sweets because before she plays she may feel sick
7 0
2 years ago
Read 2 more answers
Research shows that Piaget’s theory of cognitive development has important educational implications. Select one stage of cogniti
Anna71 [15]

Answer:

Piaget’s theory of cognitive development is a comprehensive theory about the nature and development of human intelligence. Piaget believed that one’s childhood plays a vital and active role in a person’s development.[1] Piaget’s idea is primarily known as a developmental stage theory. The theory deals with the nature of knowledge itself and how humans gradually come to acquire, construct, and use it.[2] To Piaget, cognitive development was a progressive reorganization of mental processes resulting from biological maturation and environmental experience. He believed that children construct an understanding of the world around them, experience discrepancies between what they already know and what they discover in their environment, then adjust their ideas accordingly.[3] Moreover, Piaget claimed that cognitive development is at the center of the human organism, and language is contingent on knowledge and understanding acquired through cognitive development.[4]

3 0
3 years ago
Read 2 more answers
A nurse is caring for a patient with sinusitis. In order to relieve pa institutes the following nursing interventions EXCEPT:
Stels [109]

Answer:

Administration of prescribed analgesics and anthistamine

Explanation:

I think this is done by doctor and not a nurse

8 0
3 years ago
To retrieve a memory of where your date told you she wanted to go for dinner tomorrow, you need to activate one of the strands t
Elenna [48]

Priming.

<em>Brainliest please :)</em>

6 0
3 years ago
Is not a hormone. <br><br>Estrogen<br><br>Adrenaline<br><br>Blood sugar<br><br>Cortisol
Nuetrik [128]

Answer:

The answer is blood sugar

Explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Caring , respect , appreciation , and -----are characteristics that healthy families share
    6·2 answers
  • Which system prepares food for absorption into the bloodstream?
    8·1 answer
  • True or false? A CPT instructs a client to run as fast as possible to elevate heart rates to the maximum amount to burn the most
    14·1 answer
  • In a series of experiments, Avery treated heat-killed nonvirulent S bacteria with enzymes that degraded the proteins, DNA, and R
    9·1 answer
  • Scientists have proven that genes play no role in self-esteem.
    14·2 answers
  • Explain two differences between prescription drugs and over-the-counter (OTC) drugs. Also, explain how te FDA regulates OTC drug
    5·1 answer
  • Where can you get information about sexual health care in our community?
    15·1 answer
  • An individual's needs for nutrients and energy change over the life span.<br><br> True or false
    6·1 answer
  • What do you think the greatest challenge will be for the future of public health? Support your response with
    14·1 answer
  • Other forms of energy that may be released in a chemical reaction include _____.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!