Which of Earth's unique features is the most significant, and without which, the other significant features that support life would have had no effect?
A. angle of axial tilt
B. distance from the Sun
C. presence of an atmosphere
D. presence of water on the surface
E. presence of a solid, rocky surface

helicase, i think thats it

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.

cell/ tissue/ organ/ organ system/ body