The first picture shows a cross-section of ground with four different sediment layers. The red, purple, yellow, and black colors represent four different types of sediments. Rainwater (the blue circles) has fallen on the ground and has moved through some of the layers.
The second picture shows close-up views of four types of sediments: gravel, sand, silt, and clay.
Based on the pictures, what type of sediment is represented by the black layer?

Explain your answer.

mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. weight is the measure of the force of gravity on an objects's mass, while mass is the measure of how much matter there is in an object.

loss of sensation to pressure and touch

the dorsal column–medial lemniscus pathway (dcml) (also known as the posterior column-medial lemniscus pathway (pcml)) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints.