In a country where malaria has successfully been eliminated, an outbreak of malaria can occur years later.
What could allow this later outbreak of malaria to occur?
1. mosquitoes become resistant to insecticides
2. migration of the population due to war
3. malarial parasites become resistant to quinine
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...