Scientists Have Discovered That Our Sense of Smell Is Surprisingly

question 21

Multiple Choice

Scientists have discovered that our sense of smell is surprisingly _______ capable of distinguishing thousands of chemical odors

• A) rigid
• B) inert
• C) erratic
• D) keen
• E) innate

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Definitions:

Direct Transmission

The immediate transfer of disease-causing agents between hosts through physical contact or proximity.

Indirect Transmission

The transfer of an infectious agent from a reservoir to a susceptible host via an intermediary object, vector, or animal.

Infectious Disease

Illnesses caused by pathogens such as bacteria, viruses, fungi, or parasites, which are spread directly or indirectly from person to person.

Condoms

Latex or synthetic sheaths worn on the penis during sexual activity to prevent pregnancy and reduce the risk of sexually transmitted infections.