Dam: reservoir:
a.) road closure: traffic jam
b.) braces: teeth
c.) farms: runoff
d.) groundwater: aquifer

aquifer: land:
a.) surface water: well
b.) river: ocean
c.) dam: river
d.) potable: pathogen

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.