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
DochEvi [55]
3 years ago
8

DDT is an insecticide that was used extensively in agriculture in the mid-1900s to kill many insect pests, including the boll we

evil (pictured below), another pest of commercial cotton. DDT was initially effective at controlling boll weevil outbreaks, but after about a decade DDT became much less effective, because many populations of boll weevil had evolved resistance to DDT.
Required:
Which conditions would biologists say was required for the evolution of DDT resistance in a population of boll weevils?
Biology
1 answer:
katen-ka-za [31]3 years ago
4 0

The application of one chemical for a long time causes the pest to build resistance against that chemical.

The regular application of DDT chemical and not changing the pesticide build resistance in the population of boll weevils because regular application of one pesticides creates resistance in the insects or pest which causes in the decrease of its effectiveness against the pest or insect. The farmers should apply DDT at one season or year whereas the other chemical in the second season or year in order to avoid the production of resistance in them.

Learn more: brainly.com/question/24560782

You might be interested in
What causes ocean water to become denser?
Solnce55 [7]
There are two things that cause ocean water to become denser, and those are b) the salinity of water and low temperatures.
The more salt there is, the denser the water will be - take the lake Dead Sea in Israel, Jordan, and Palestine for example.
And the lower the temperature, again, the denser the water will be - the deeper you go into an ocean, it will be more difficult to move around due to density and other things. 
6 0
3 years ago
Atp is much better at doing what​
allochka39001 [22]

ffyrtdrtfdckttftfctyytftfftdeededtgtgvgkgyhkjktgjtgtfjcfvcfcseg bnmvgfgfchftgytgyvg  nhvcjhjjryxchevdrftloiuymhecdfhgjlj

5 0
3 years ago
9(5x + 1) ÷ 3y
juin [17]

Answer:

\frac{9(5x + 1)}{3y}  \\  =  \frac{3(5x + 1)}{y}  \\  =  \frac{15x + 3}{y}

3 0
3 years ago
The left and right cerebral hemispheres are connected by the group of answer choices fornix. septum. cerebral commissures. cereb
sineoko [7]

he left and right hemispheres are connected by the cerebral commissures. Thus, the correct option is C.

<h3>What is cerebral commissures?</h3>

Three tracts of nerve fibers or axons connect the right and left cerebral hemispheres, and these are referred to as commissures cerebral.

The corpus callosum, anterior commissure, and posterior commissure are three transverse nerve fiber bundles that connect homologous parts of each hemisphere.

The corpus callosum, also known as the great cerebral commissure, is the largest, connecting the majority of the cerebral hemispheres and allowing the cerebral cortex to function as a whole.

For more information regarding cerebral commissures, visit:

brainly.com/question/14239401

#SPJ1

6 0
2 years ago
In blood types, a person can have type A, type B, type AB or type O blood.
zubka84 [21]

Answer:

Possible blood type of their children is type A and type B blood

Explanation:

A person can have type A, type B, type AB or type O blood.

A woman who has type AB blood marries a man with type O blood.

Parents                        AB     x     OO

Possible genotypes        AO     BO

Possible blood type of their children is type A and type B blood

7 0
3 years ago
Other questions:
  • How does the ring of fire relate to the location of earthquake?
    12·1 answer
  • A nurse is caring for an older adult client with delirium. which intervention will most effectively reduce the client's risk for
    12·1 answer
  • A response that occurs automatically and helps in protecting our body is called a(n) ___.
    13·1 answer
  • How new species may have formed in three land masses from the ancestral Adansonia species
    11·1 answer
  • During prophase 1 of meiosis, crossing over between the sister chromatids occurs. What is the purpose of this process
    12·1 answer
  • According to the data in Model 1, how many females fall within the range 146-155 cm tall?
    8·1 answer
  • After its kind means reproduction of new kinds of living things .<br><br><br> TrueFalse
    8·2 answers
  • A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomou
    14·1 answer
  • Where is fats and oil and protein digested ​
    8·1 answer
  • Why are SNPs important to the study of genetics?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!