Mosses and lichens are

Both mosses and lichens are considered non-vascular plants, but only mosses are truly plants, according to the U.S. Forest Service. Lichens aren't plants at all. They are complex organisms formed by a symbiotic relationship between a fungus and an algae or cyanobacteria (or, in some cases, both).

Explanation:

the correct answer is 2.

a slump in geology means a mass movement process of slope failure. a mass of rock or unconsolidated material drops along a slip surface. in other words, rock layers move a short distance down the slope. the slump block is an intact block (2), without any landslide material.

in this image, 1 is the surface of rapture (scarp), 2 the slump block, 3 main scarp (crown), 4 base of rapture with debris flow.

slumps are caused by clear cutting on unstable soils and the sagging of earth, in coastal areas they are due to wave infiltration.

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.