I think B but I might be ! wrong !
Answer:
Complementary is 90 degrees. 90=2x plus 13 plus 4x minus 5. 90 = 6x minus 18. 108 equals 6x
Explanation:
x equals 18. 18 times 4 is 72 minus 5 is 67. b is 67 degrees
1.lithosphere( land)
2.hydrosphere (water)
3.biosphere (living things)
4.atmosphere (air)
everything in the earth's system can be placed into one of these spheres.
