2. Complete the chart below. The first one is done for you. Liesita factor Explanation of limiting factor Example
Physical
Barriers
A river, mountain or other landform The animals and plants on an island can't
that blocks an organism from moving migrate to other seas.
to another suitable place.
Sunlight
Water
Temperature
Soil

Physical barriers stops migration of animals.

Explanation:

Physical barriers are the substances that prevent the migration of movement of organism from one region to another. River, mountain or other landform are the examples of physical barrier that prevents movement. The animals and plants that are separated from the external environment breeds within the existing population and adopt itself towards the change that occurs in the environment.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

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.