Answer:
Lichens are not parasitic when they grow on trees, they just use the tree bark as a home. They enrich the soil by trapping water, dust and silt. When lichens die they contribute organic matter to the soil, improving the soil so that other plants can grow there.

Work done = 100J
Distance = 5 meters
Force = ?

Force = 100/5 = 20N
Therefore, the force needed is 20 Newtons
A dissection microscope<span> is light illuminated. The image that appears is three </span>dimensional<span>. It is used for dissection to get a better look at the larger specimen. You cannot see individual cells because it has a low magnification. Or just call it a dissecting microscope</span>
1. Variations
2. Extinction
3. Behavioral
4. Functional
5. Structural