Vitamin B₃ Is Also Called

question 4

Multiple Choice

Vitamin B₃ is also called

• A) niacin
• B) ergocalciferol
• C) nicotinic acid
• D) both a and c

---

Definitions:

Confined Aquifer

An aquifer bounded by impermeable layers, where the water is under pressure, allowing it to rise above the level of the aquifer when tapped.

Permeability

A measure of how easily fluids can pass through a rock or sediment, depending on the connectivity of its pores.

Groundwater Flow

Groundwater flow describes the movement of underground water through the soil and rock layers, driven by gravitational forces and pressure differences.

Water Table

The level below the Earth's surface at which the ground is saturated with water.