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The subject "Air pollution caused by industrial fumes" is singular, so the verb should also be singular. Therefore, "have" should be corrected to "has" to match the singular subject.
What is the chemical name of Vitamin B5 ?
Athlete's foot is caused by:
What is the botanical name for an apple?
Abhijeet Sen has passed away recently. Who was he?
In Photography, which chemical used as a fixer.
What is the scientific name for the common housefly?
Which among the following disease is not caused by Protozoa ?
Which of these animals possesses a chitinous exoskeleton?
Paramecium, which is a __________ organism, features a defined shape and ingests food at a specific site.
Which of the following organisms breathe through their skin?