1. Which statement best describes the relationship between dead zones and agricultural runoff?

a. Agricultural run off leaves a filmy layer on the surface of the ocean which
prevents carbon dioxide from dissolving in the ocean
b. Agricultural run off creates short-term algal blooms which can lead to decreased
dissolved oxygen in the ocean causing fish to migrate elsewhere
C. Hurricanes increase agricultural runoff which can lead to an increase in oceanic
decomposition
d. Agricultural runoff has only positive effects on our oceans

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.