Proper environmental sanitation and the use of insecticides will prevent the spread of dengue fever virus.
<h3>What is a disease vector?</h3>
A disease vector is an organism which transmits pathogens to other organism.
Aedes aegypti mosquito is the vector for dengue fever. It transmits mosquito through its bite, thus introducing the virus into the blood.
The use of insecticides and the proper sanitation will help prevent the transmission of diseases.
At home, use of insecticide-treated nets will help prevent the spread of dengue fever.
Therefore, proper environmental sanitation and the use of insecticides will prevent the spread of dengue fever virus.
Learn more about disease vectors at: brainly.com/question/1086343
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C: The organelles are enclosed in membranes
Perceptual constancy
Perceptual constancy is the
ability to view or consider an object as unchanged under different conditions
such as changes in distance, physical features or illumination. For the
question above, Immanuel knows the kite is not shrinking due to his brain's
ability to maintain perceptual constancy.