Answer:
runoff is he draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc.
Explanation:
Answer:
valency of an element is a combining power of an element.
for example oxygen has six valance electron but its valency is 2.
hope it helps.
A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout any given sample & a heterogeneous mixture has components in which proportions vary throughout the sample. They are both similar because they’re often referred to as solutions
Answer:
Total Dissolved Solids (TDS): A measure of all dissolved substances in water, including organic and suspended particles that can pass through a very small filter. TDS is measured in a laboratory and reported as milligrams per liter (mg/L).
