Which of these best describes extinction events?

answers are
a) extinctions are entirely caused by human interactions and disruptions to ecosystems.

b) extinctions are entirely avoidable if species are monitored and placed on an endangered list.

c) extinctions occur when speciation ceases to occur and environments become too cold for homeostasis.

d) extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted.

Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted

Explanation:

Evolution has made it known to us that organism goes to extinction as a result of changes in ecological stress without being able to adapt by this organism to the new changes, hence; leads to extinction.

Charle's darwin theory of natural selection discuss about '' survival of the fittest'' when an organism fails to survive during harsh environment changes, it leads to extinction of such organism. Dinnosaur were able to go into extinction as a result of environmental changes which they are unable to adjust, thus; they went to extinction.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

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.