1. a cladogram begins with a common of all the organisms represented above.

A cladogram begins with a common Ancestor of all the organisms represented above.

Explanation:

A cladogram is a type of diagram which is used to show their relationship between some organisms on the basis of some structural feature.

It is not like phylogenetic tree which is used to show the evolutionary history and relationships between organisms.

In a cladogram, different organism are related to one organism which is known as ancestor and cladogram begins from here.

they absorb it i think

not sure

you

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