Xylem

1. Xylem Tubes in a plant stem that carry water from the roots to the leaves

2. Phloem Tubes in plant stems that carry food from the leaves to other parts of the plant

3. Biodiversity The variety of different species in an area

4. Natural Selection The nonrandom process by which biological traits become more or less common in a population over multiple generations to adapt to the needs of a species for survival

5. Decomposition The process where organic material is broken down into simpler forms of matter

6. Primary Succession The development biotic factors in previously uninhabited areas with little to no top soil

7. Secondary Succession Occurs in an area where soil exists and growth of plants has been interrupted but not completely wiped out

8. Dichotomous Key A strategy in classification and identification of organisms where two statements of characteristics are presented with one being more like the organism

9. Competition The struggle among organisms against each other to get the same resource

10. Deforestation The cutting down of forests