Which of the following is true of food webs? a. Food webs don't actually exist in nature.
b. A food web shows the flow of decomposers
from producers to consumers and, finally, to
producers.
c. In food webs, detritivores break down organic
waste to return nutrients to the ecosystem.
d. When diagramming food chains and food
webs, the arrows should be drawn from the
lower trophic levels to the higher levels to
show the flow of energy.
e. As energy is moved up the food web, most of it
is conserved by the species in the next trophic
levels.

c

explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

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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