With the global population constantly increasing, at some point food will become limited. what is a way that should not be used to hold off this problem?

a. use genetically-modified foods

b. turn more land over for agricultural use

c. improve agricultural technologies to increase crop yield

d. government regulated sterilizations of people

The correct answer is C improve agricultural technologies to increase crop yield.

Explanation:

Genetic engineering is the heart of molecular biology.Genetic engineering is used to produce various genetically modified plant to improve crop yield.

     To do this many procuderes of recombinant DNA technology is applied to make the crop herbicide resistant,parasite resistant,flood resistant,drought resistant etc.Beside this maximum hybrid crops are planted to increase the crop yield within a small period of time.This ultimately decreasing the nutritional value of food value of the crops.

   Beside this many chemical fertilizers are being used to increase the crop yield but the more usage of chemical fertilizers decreases the fertility of the soil.

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.