How are underground gas or oil leaks cleaned
a. groundwater is pumped to the surface and purified
b. sewage treatment are built to clean the water
c. natural fruit acids are used to dissolve the oil
d. bacteria are added to the ground water to feed an oil

six grader is what i am ssorry

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.