Which of the Following Is Not Part of Dust

question 83

Multiple Choice

Which of the following is not part of dust?

• A) mineral particles
• B) water molecules
• C) pollen and spores
• D) microbes

---

Definitions:

Cloaca

A common cavity at the end of the digestive tract for the release of both excretory and genital products in many vertebrates, excluding most mammals.

Excretion

The process by which metabolic waste products and toxic substances are removed from the body of an organism.

Hollow Skeleton

A structural feature in some organisms, such as birds, where bones are lightweight yet strong due to being hollow, facilitating flight.