What happens to the total population when the birth rate is at 40 and the death rate is at 15?

a. the population is moderately decreasing.
b. the population is moderately increasing.
c. the population is decreasing significantly.
d. the population is increasing significantly.

I want so say its B or D but I think it's B I hope this helps and im sorry if it doesn't ;)

the answer is golgi apparatus

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