Question

What is lichen?????????????? ​

Answer 1

1.

a simple slow-growing plant that typically forms a low crusty, leaflike, or branching growth on rocks, walls, and trees.

"the cedars are festooned with lichen"

2.

a skin disease in which small, hard round lesions occur close together.

"patients with oral lichen planus"

Answer 2

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull.