Which of the following is a correct sequence of levels in life's hierarchy proceeding downward from an individual animal? a. brain, organ system, nerve cell, nervous tissueb. organ system, nervous tissue, brainc. organism, organ system, tissue, cell, organd. nervous system, brain, nervous tissue, nerve celle. organ system, tissue, molecule, cell

The correct sequence of levels in life's hierarchy proceeding downward from an individual animal is; Choice D: nervous system, brain, nervous tissue, nerve cell.

By hierarchical organisation;

The simplest life units are cells.

In this case scenario; by proceeding downward; we have;

The hierarchy is therefore as in Choice D.

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Option D.

Nervous system,brain, nerve tissue, nerve cell.

Explanation:

Life hierarchy shows the arrangement of levels of development in organism from highest to lowest or lowest to highest base on the complexity.

Nervous system is more complex than brain, brain is complex that nerve tissue, nerve tissue is the assemblage of nerves cell.

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.