What causes eutrophication and how does this occur?

The growth of algal bloom in the nearby water bodies of the agricultural fields due to excess of the nutrients is called as eutrophication.

This is caused due to the excessive use of fertilizers in the fields. The excess of fertilizers gets run off to the nearby water bodies which lead to the growth of the algae.

The algae forms a layer on the upper surface of the water that decreases the oxygen concentration in the water that adversely affects the life of other aquatic life forms in it.

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.