Mosquito netting is often used in places such as Africa and South America where mosquitoes that spread serious diseases are found. Certain mosquito species, which carry diseases such as dengue fever, are spreading northward into cooler climates. Is netting a useful tool to protect people in cooler places?

Another question

Social, scientific, and environmental factors affected roadway technology throughout history. Based on your research, which of these factors likely had the greatest influence? Cite evidence based on what you have read in this lesson, to support your claim.