Name the substance, found in the trachea, that traps dust and pathogens and stops them from entering the lungs.

mucus

Explanation:

mucus is a sticky substance found in the trachea, and in the nose, that traps pathogens therefore preventing them from entering and infecting the body

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a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

d. organisms have cells with different shapes and functions.