In trachoma, which of the following becomes scarred and filled with blood vessels, resulting in blindness? a) the sclerab) the corneac) the retinad) the conjunctivae) the fibrous tunic

D. The conjuctiva.

Explanation:

The conjuctiva is a membrane that lines the inside of the eye. Its function is to lubricate the surface of the eye, preventing it from dryness.

In trachoma, the conjuctiva becomes dry, scarred and this prevents it from performing its function of lubricating the eye. Trachoma can be treated but if left untreated, it can lead to blindness.

all soils contain mineral particles, organic matter, water and air the combinations determine the soil's properties – its texture, structure, porosity, chemistry and color. soil is made up of different-sized particles. sand particles tend to be the biggest.

which of what? i am confused