Which of the following is true concerning sources of water pollution? A)
Mine wastes and heavy metals become water pollution through storm water runoff.
B)
Biodegradable materials like food, wood, and leaves are not considered pollution.
C)
Petroleum byproducts and fuels end up as pollution principally from oil spills.
D)
Pesticides and herbicides do not commonly become water pollutants.
E)
Polluted and contaminated precipitation pollutes lake water.

convergent boundaries: where two plates are colliding. subduction zones occur when one or both of the tectonic plates are composed of oceanic crust.

divergent boundaries – where two plates are moving apart.

transform boundaries – where plates slide passed each other.

explanation:

if triangle abc is congruent to triangle def, their interior angles are congruent, because congruent parts of congruent triangles are congruent (cpctc).

that means ∠d is congruent to ∠a; ∠d is equal to 8x - 2.

interior angles of all triangles add to equal 180 degrees, so you can set the sum of these interior angle values equal to 180 and solve for x.

180 = (8x - 2) + 22 + 72

180 = 8x - 2 + 22 + 72

180 = 8x + 92

88 = 8x

11 = x

x = 11