1. which organism is able to cause an infection?
a. red blood cell
b. virus
c. bacteria
d. white blood cell

2. how do single-celled decomposers get energy?

a. they use a process called budding.
b. they feed on living organisms
c. they make their own food
d. they break down dead organisms

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

c is the correct answer hope this !