Cleaning and purifying which of the following decreases damage where the pollution initially accesses the water systems?
a.)basins
b.)ditches
c.)drains
d.)reservoirs

C

Explanation:

Because they leave drains by their self to mold and pick up other sources of pollution.

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

this was from the link provided:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.