How has the discovery of DNA affected the classification of protists? Select three options.

Many scientists want to get rid of the kingdom Protista.
Some organisms have been moved out of the kingdom Protista.
Classification is generally easier and less complex.
It has been determined that protists share a common ancestor.
Some organisms have been moved into the kingdom Protista.

coal is not sustainable because it will one day run out.

not sure if this is what you'r looking for eubacteria and archaebacteria

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.